One of the topics of photochemical hole burning (PHB) materials is high-temperature PHB. This is not only important for optical applications but also important for purely scientific studies because high-temperature materials expand the temperature range in which we can obtain informations about electron-phonon interactions, structural relaxations, and photoinduced processes of guest-host systems. Although some of inorganic PHB materials show an excellent property that a hole can be burnt even at room temperature, holes of only few organic chromophores are observed above 80 K [1]. PHB systems with inorganic matrices have a possibility of showing high-temperature PHB for organic dyes. Organic dyes adsorbed on the surface of γ-almina are reported to show high-temperature hole formation and small temperature dependence of Debye-Waller factor (DWF) [2].
{"title":"Photochemical Hole Burning of Organic Dye Doped in Inorganic Semiconductor: Zinc Porphyrin in Titanium Dioxide","authors":"S. Machida, K. Horie, T. Yamashita","doi":"10.1063/1.113249","DOIUrl":"https://doi.org/10.1063/1.113249","url":null,"abstract":"One of the topics of photochemical hole burning (PHB) materials is high-temperature PHB. This is not only important for optical applications but also important for purely scientific studies because high-temperature materials expand the temperature range in which we can obtain informations about electron-phonon interactions, structural relaxations, and photoinduced processes of guest-host systems. Although some of inorganic PHB materials show an excellent property that a hole can be burnt even at room temperature, holes of only few organic chromophores are observed above 80 K [1]. PHB systems with inorganic matrices have a possibility of showing high-temperature PHB for organic dyes. Organic dyes adsorbed on the surface of γ-almina are reported to show high-temperature hole formation and small temperature dependence of Debye-Waller factor (DWF) [2].","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1995-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130907135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A photon scanning tunneling microscope (PSTM) is an optical microscope with super-resolution beyond the diffraction-limit based on the near field optics, which has been intensively studied in these years[1]. Since it can be used not only as a microscope but also as a nanometric fabrication tool and a manipulator of nanometric particles, a variety of applications have been proposed[2]. This paper reviews the recent progress of our study on PSTM.
{"title":"Photon Scanning Tunneling Microscope","authors":"M. Ohtsu, Shudong Jiang, H. Ohsawa","doi":"10.2184/LSJ.19.8_839","DOIUrl":"https://doi.org/10.2184/LSJ.19.8_839","url":null,"abstract":"A photon scanning tunneling microscope (PSTM) is an optical microscope with super-resolution beyond the diffraction-limit based on the near field optics, which has been intensively studied in these years[1]. Since it can be used not only as a microscope but also as a nanometric fabrication tool and a manipulator of nanometric particles, a variety of applications have been proposed[2]. This paper reviews the recent progress of our study on PSTM.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1991-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127448222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Time- and space domain (TSD) holography [1-3] can be viewed upon as a more general case of conventional holographic process, in which the recording media re members, in addition to the spatial picture, also the spectral intensity of the illuminating light. The resolution of TSD-holograms in time is Fourier-related to the spectral properties of the recording media. The longest time interval that can be recorded is given by the inverse value of the homogeneous width of the zero-phonon line and the shortest time is given by the inverse value of the width of the inhomogeneous distribution in the frequency dimension. By using photochemical spectral hole-burning in organic dye-polymer systems with very broad inhomogeneous bands TSD-holograms of full scenes of ultrafast events with subpicosecond time resolution have been recorded [4, 5].
{"title":"Femtosecond Time-Space Holograms: Diffraction on the Edge of Time","authors":"A. Rebane, O. Ollikainen, H. Schwoerer, U. Wild","doi":"10.1364/shbs.1994.fd3","DOIUrl":"https://doi.org/10.1364/shbs.1994.fd3","url":null,"abstract":"Time- and space domain (TSD) holography [1-3] can be viewed upon as a more general case of conventional holographic process, in which the recording media re members, in addition to the spatial picture, also the spectral intensity of the illuminating light. The resolution of TSD-holograms in time is Fourier-related to the spectral properties of the recording media. The longest time interval that can be recorded is given by the inverse value of the homogeneous width of the zero-phonon line and the shortest time is given by the inverse value of the width of the inhomogeneous distribution in the frequency dimension. By using photochemical spectral hole-burning in organic dye-polymer systems with very broad inhomogeneous bands TSD-holograms of full scenes of ultrafast events with subpicosecond time resolution have been recorded [4, 5].","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125106328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Materials of MyM’1-yFClxBr1-x:Sm2+ have been widely applied in spectral hole-burning since the first observation of persistent spectral hole-burning in BaFCl:Sm2+ at 2K was reported by A. Winnaker, etc. in 1985[1]. From then on, hole-burning in BaFCl0.5Br0.5:Sm2+ at 77K[2] in SrFCl and Mg0.5Sr0.5FCl0.5Br0.5:Sm2+ at room temperature[3, 4] were reported. Room temperature hole-buring of Sm2+ in fluorohafnate glasses[5,6] were reported in recent years also. These materials are of potential use in high temperature hole- burning. But comparing to organic materials, they have lower hole- burning efficiency and narrower inhomogenous line width. In order to apply spetral hole- buring in frequency domain optical storage, it is important to improve these materials.
{"title":"Electron transition process of 5D2→7F0 of Sm2+ in spectral hole-burning","authors":"Hongwei Song, Jiahua Zhang, Shi-hua Huang, Jiaqi Yu","doi":"10.1364/shbs.1994.wd24","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd24","url":null,"abstract":"Materials of MyM’1-yFClxBr1-x:Sm2+ have been widely applied in spectral hole-burning since the first observation of persistent spectral hole-burning in BaFCl:Sm2+ at 2K was reported by A. Winnaker, etc. in 1985[1]. From then on, hole-burning in BaFCl0.5Br0.5:Sm2+ at 77K[2] in SrFCl and Mg0.5Sr0.5FCl0.5Br0.5:Sm2+ at room temperature[3, 4] were reported. Room temperature hole-buring of Sm2+ in fluorohafnate glasses[5,6] were reported in recent years also. These materials are of potential use in high temperature hole- burning. But comparing to organic materials, they have lower hole- burning efficiency and narrower inhomogenous line width. In order to apply spetral hole- buring in frequency domain optical storage, it is important to improve these materials.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115324828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The dynamical behavior of proteins is often interpreted in terms of conformational substates.1 A protein can assume a large number of slightly different structures, separated by conformational barriers. This view is very similar to the description of glass dynamics in terms of two-level systems.2,3 A two-level system (TLS) represents a group of atoms or molecules which can reside in either of two potential energy wells along a conformational coordinate. At very low temperature the TLS can fluctuate between the two potential energy minima through a tunneling process.
{"title":"Long-Lived Stimulated Photon Echo Studies of Protein and Glass Dynamics","authors":"D. Leeson, D. Wiersma","doi":"10.1364/shbs.1994.thb1","DOIUrl":"https://doi.org/10.1364/shbs.1994.thb1","url":null,"abstract":"The dynamical behavior of proteins is often interpreted in terms of conformational substates.1 A protein can assume a large number of slightly different structures, separated by conformational barriers. This view is very similar to the description of glass dynamics in terms of two-level systems.2,3 A two-level system (TLS) represents a group of atoms or molecules which can reside in either of two potential energy wells along a conformational coordinate. At very low temperature the TLS can fluctuate between the two potential energy minima through a tunneling process.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116528600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The recently growing interest in photon-gated persistent spectral hole burning(PHB) spectroscopy is due partly to the possibilities of nondestructive reading[1] and extremely high sensitivity in the detection of subtle perturbations under external fields[2]. The mechanisms of reported photon-gated PHB systems have two-step photoionization[3], two-step photo-decom position[4], two-color sensitization reaction via triplet-triplet energy transfer[5] and photon induced donor-acceptor electron transfer) DA-ET) reactions[1]. The triplet bottleneck effect[6] may be overcome by using photon-gated PHB to produce detectable holes after a short irradiation time, the successful observations of PHB on a nanosecond time scale in several photon-gated DA-ET system [1,7] demonstrated more applicability in ultrahigh density optical storage, considering both the per formance of these reported systems and the variety of DA combinations, further efforts to find systems with optimum storage properties and to make the PHB mechanism clearer should be very rewarding.
{"title":"The photoproduct of Photon-gated spectral hole burning observation in two donor-acceptor electron transfer systems","authors":"Yongle Pan, You-yuan Zhao, Yu Yin, Lingbing Chen, Ruisheng Wang, Fuming Li","doi":"10.1364/shbs.1994.wd26","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd26","url":null,"abstract":"The recently growing interest in photon-gated persistent spectral hole burning(PHB) spectroscopy is due partly to the possibilities of nondestructive reading[1] and extremely high sensitivity in the detection of subtle perturbations under external fields[2]. The mechanisms of reported photon-gated PHB systems have two-step photoionization[3], two-step photo-decom position[4], two-color sensitization reaction via triplet-triplet energy transfer[5] and photon induced donor-acceptor electron transfer) DA-ET) reactions[1]. The triplet bottleneck effect[6] may be overcome by using photon-gated PHB to produce detectable holes after a short irradiation time, the successful observations of PHB on a nanosecond time scale in several photon-gated DA-ET system [1,7] demonstrated more applicability in ultrahigh density optical storage, considering both the per formance of these reported systems and the variety of DA combinations, further efforts to find systems with optimum storage properties and to make the PHB mechanism clearer should be very rewarding.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122556569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rotational tunneling of methyl groups has been studied extensively in the past decades [1]. The specific features of the dynamics of rotational tunneling are a consequence of the basic laws of quantum mechanics. The reason is that a 2π3-rotation of a methyl group is equivalent to a two-fold permutation of identical particels. As a consequence, the symmetry of the total wave function of the methyl group has to be invariant with respect to a rotation. This symmetry correlation has a dramatic influence on the relaxation dynamics between different rotational states. To observe a rotational tunneling relaxation an interaction is necessary, which breaks the strict symmetry correlation. For the CH3-methyl group this interaction is the nuclear spin-spin coupling and for the CD3-methyl group it is the nuclear quadrupole interaction of the deuteron with the electric field gradient. The magnitude of this interaction is so small that the respective relaxation times can be as long as months at low temperatures. Because of the influence of the nucleus involved in the rotational tunneling dynamics the relaxation of the rotational states is called nuclear spin conversion. Theoretical models have been published for the protonated [2, 3] as well as for the deuterated methyl group [4]. They basically predict three different kinds of relaxation processes (Direct, Raman and Orbach process) depending on the rotor parameters which are the V3-potential, the tunneling splitting and the phonon coupling. These, in turn depend on isotopic substitution.
{"title":"Rotational tunneling dynamics of methyl groups measured by spectral hole burning","authors":"K. Orth, J. Friedrich","doi":"10.1364/shbs.1994.wd14","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd14","url":null,"abstract":"Rotational tunneling of methyl groups has been studied extensively in the past decades [1]. The specific features of the dynamics of rotational tunneling are a consequence of the basic laws of quantum mechanics. The reason is that a \u00002π3-rotation of a methyl group is equivalent to a two-fold permutation of identical particels. As a consequence, the symmetry of the total wave function of the methyl group has to be invariant with respect to a rotation. This symmetry correlation has a dramatic influence on the relaxation dynamics between different rotational states. To observe a rotational tunneling relaxation an interaction is necessary, which breaks the strict symmetry correlation. For the CH3-methyl group this interaction is the nuclear spin-spin coupling and for the CD3-methyl group it is the nuclear quadrupole interaction of the deuteron with the electric field gradient. The magnitude of this interaction is so small that the respective relaxation times can be as long as months at low temperatures. Because of the influence of the nucleus involved in the rotational tunneling dynamics the relaxation of the rotational states is called nuclear spin conversion. Theoretical models have been published for the protonated [2, 3] as well as for the deuterated methyl group [4]. They basically predict three different kinds of relaxation processes (Direct, Raman and Orbach process) depending on the rotor parameters which are the V3-potential, the tunneling splitting and the phonon coupling. These, in turn depend on isotopic substitution.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116998962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The presence of ground state conformers of crystal violet (CV) have been in dispute since 1942 when proposed by Lewis, Magel, and Lipkin.1 They suggested the two conformers in alcohols to explain the disappearance of a shoulder (~550 nm) and the enhancement of a peak (~590 nm) in the absorption spectrum at low temperature (114 K). The predominant conformer, which was assigned to the origin of the peak, was assumed D3 symmetry (propeller type) in which all phenyl groups are tilted in phase. The second conformer was supposed to have C2 symmetry (distorted propeller type), being sited as the origin of the shoulder, in which one of the phenyl groups is tilted in the opposite direction.
{"title":"Ultrafast population transfer in ground states: evidence for two ground states of crystal violet","authors":"Y. Maruyama, M. Ishikawa","doi":"10.1364/shbs.1994.wd53","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd53","url":null,"abstract":"The presence of ground state conformers of crystal violet (CV) have been in dispute since 1942 when proposed by Lewis, Magel, and Lipkin.1 They suggested the two conformers in alcohols to explain the disappearance of a shoulder (~550 nm) and the enhancement of a peak (~590 nm) in the absorption spectrum at low temperature (114 K). The predominant conformer, which was assigned to the origin of the peak, was assumed D3 symmetry (propeller type) in which all phenyl groups are tilted in phase. The second conformer was supposed to have C2 symmetry (distorted propeller type), being sited as the origin of the shoulder, in which one of the phenyl groups is tilted in the opposite direction.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126875375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. N. Korotaev, I. Kolmakov, V. P. Karpov, M. F. Shchanov
It is customary to assume that the optical spectra of glasses have some distinctive features which are caused by two-level systems (TLS) in the host. In the last few years the new data appeared which indicated that TLS can be found in the crystals as well. Among the evidences are the spectral jumps observation in the single molecule spectrum of p-terphenyl doped with pentacene molecular crystal [1], the revealing of the anomalous quasylinear thermal dependency of zero-phonon line halfwidth in the spectra of perylene in n-octane matrices [2,3] etc.
{"title":"The High Pressure Effects in Optical Spectra of Impurity Crystals","authors":"O. N. Korotaev, I. Kolmakov, V. P. Karpov, M. F. Shchanov","doi":"10.1364/shbs.1994.wd58","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd58","url":null,"abstract":"It is customary to assume that the optical spectra of glasses have some distinctive features which are caused by two-level systems (TLS) in the host. In the last few years the new data appeared which indicated that TLS can be found in the crystals as well. Among the evidences are the spectral jumps observation in the single molecule spectrum of p-terphenyl doped with pentacene molecular crystal [1], the revealing of the anomalous quasylinear thermal dependency of zero-phonon line halfwidth in the spectra of perylene in n-octane matrices [2,3] etc.","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123630562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Persistent spectral hole burning(PSHB) permits use of the frequency domain for achieving ultrahigh-density optical information storage in which the presence of a spectral hole at a particular laser frequency utilized to encode much many bits within a single focused laser spot. The ultimate storage density of the three-dimensional(x,y,f) optical memories can be increased to 109-1011 bits/cm2[1].
{"title":"Multiple Photon-Gated Persistent Spectral Holes Burnt over A Whole Absorption Band in A New System of Frequency-Domain Optical Storage Material","authors":"You-yuan Zhao, Yongle Pan, Yu Yin, Lingbing Chen, Ruisheng Wang, Fuming Li, Shaoming Yao, Manhua Zhang","doi":"10.1364/shbs.1994.wd27","DOIUrl":"https://doi.org/10.1364/shbs.1994.wd27","url":null,"abstract":"Persistent spectral hole burning(PSHB) permits use of the frequency domain for achieving ultrahigh-density optical information storage in which the presence of a spectral hole at a particular laser frequency utilized to encode much many bits within a single focused laser spot. The ultimate storage density of the three-dimensional(x,y,f) optical memories can be increased to 109-1011 bits/cm2[1].","PeriodicalId":443330,"journal":{"name":"Spectral Hole-Burning and Related Spectroscopies: Science and Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121004719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：