Injection seeding is a convenient and reliable method for achieving single-frequency operation. Injection seeding is accomplished by introducing light from a low-power stable single-frequency oscillator (referred to as a seed laser) into a high-power laser cavity (referred to as power oscillator) during the laser pulse buildup period.
{"title":"Single-frequency Operation of a Q-switched Nd:YAG Laser by Injection Seeding","authors":"Hongxu Hao, Chunqing Gao, G. Wei, Jaize Li","doi":"10.1364/sslma.1997.fb4","DOIUrl":"https://doi.org/10.1364/sslma.1997.fb4","url":null,"abstract":"Injection seeding is a convenient and reliable method for achieving single-frequency operation. Injection seeding is accomplished by introducing light from a low-power stable single-frequency oscillator (referred to as a seed laser) into a high-power laser cavity (referred to as power oscillator) during the laser pulse buildup period.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133847674","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}
V. Mikhailov, V. Kalashnikov, I. G. Poloyko, D. von der Linde
Rapid progress in the field of subpico- and femtosecond pulse generation has resulted in the shortest pulse duration of 7.5 fs [1]. The main mode-locking technique used here is the Kerr-lens mode-locking [2]. However, one of the distinctive feature of modern investigations is the renovation of the interest toward passive mode-locking due to saturable absorbers, in particular, multilayer quantum-well semiconductor absorbers [3, 4]. It was shown, that such absorbers are capable to provide sub-10 fs ultra-short pulse generation, in spire the absorber’s recovery time exceeds 100 fs. This result has an explanation in terms of soliton mode-locking with slow saturable absorber as a stabilizing mechanism [5]. Last time an ultra-short pulse stabilization mechanism due to spectral filter with a transmission band shifted in respect to the generation field carrier frequency (a so called sliding frequency method [6] which is used in fiber optics lines) has received a great lot of attention.
{"title":"Passive mode-locking of cw lasers due to frequency sliding","authors":"V. Mikhailov, V. Kalashnikov, I. G. Poloyko, D. von der Linde","doi":"10.1364/sslma.1997.thd2","DOIUrl":"https://doi.org/10.1364/sslma.1997.thd2","url":null,"abstract":"Rapid progress in the field of subpico- and femtosecond pulse generation has resulted in the shortest pulse duration of 7.5 fs [1]. The main mode-locking technique used here is the Kerr-lens mode-locking [2]. However, one of the distinctive feature of modern investigations is the renovation of the interest toward passive mode-locking due to saturable absorbers, in particular, multilayer quantum-well semiconductor absorbers [3, 4]. It was shown, that such absorbers are capable to provide sub-10 fs ultra-short pulse generation, in spire the absorber’s recovery time exceeds 100 fs. This result has an explanation in terms of soliton mode-locking with slow saturable absorber as a stabilizing mechanism [5]. Last time an ultra-short pulse stabilization mechanism due to spectral filter with a transmission band shifted in respect to the generation field carrier frequency (a so called sliding frequency method [6] which is used in fiber optics lines) has received a great lot of attention.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116674801","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}
Significant amount of effort has been made in the development of diode laser pumped green light Nd:YVO4 through intracavity frequency doubling in recent years. The sum frequency generation from longitudinal modes often cause the so called 'green problem' even at low power operation [1]. Nonetheless, it has been shown that higher frequency conversion efficiency can be made possible by utilizing the interplay between second harmonic and sum frequency generation to produce periodic pulse oscillation [2]. In this paper, we are showing that under cross-polarized two-mode oscillation (CPTMO), the convergent efficiency can be 50 % higher than that of parallel polarized two-mode oscillation (PPTMO).
{"title":"Enhancement of Conversion Efficiency of Intracavity-Frequency-Doubled Nd:YVO4 Laser by Cross-Polarized Longitudinal Modes","authors":"H. Hsieh, C. Hsu, S. Huang, F. Kao","doi":"10.1364/sslma.1997.tuc5","DOIUrl":"https://doi.org/10.1364/sslma.1997.tuc5","url":null,"abstract":"Significant amount of effort has been made in the development of diode laser pumped green light Nd:YVO4 through intracavity frequency doubling in recent years. The sum frequency generation from longitudinal modes often cause the so called 'green problem' even at low power operation [1]. Nonetheless, it has been shown that higher frequency conversion efficiency can be made possible by utilizing the interplay between second harmonic and sum frequency generation to produce periodic pulse oscillation [2]. In this paper, we are showing that under cross-polarized two-mode oscillation (CPTMO), the convergent efficiency can be 50 % higher than that of parallel polarized two-mode oscillation (PPTMO).","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124552379","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}
T. Fukuda, Y. Terada, K. Shimamura, Katsuhiro Imai, M. Imaeda
Many investigations on the optoelectronic materials have been carried out by numerous research groups. However, only a few crystals such as LiNbO3, LiTaO3 and Nd:Y3Al5O12 have been successfully used in industrial applications. Recently, the development of new laser and nonlinear optical crystals has become a focus of considerable interest because of the progress of optoelectronics technologies. We have carried out the investigations focusing on the development of new optoelectronic and photonic materials, using advanced crystal growth techniques. Here, our research and progress in development of optoelectronic materials are introduced to propose one meritorious trend.
{"title":"Growth and Characterization of Laser and Nonlinear Optical Crystals for Solid State Laser Applications","authors":"T. Fukuda, Y. Terada, K. Shimamura, Katsuhiro Imai, M. Imaeda","doi":"10.1364/sslma.1997.tub2","DOIUrl":"https://doi.org/10.1364/sslma.1997.tub2","url":null,"abstract":"Many investigations on the optoelectronic materials have been carried out by numerous research groups. However, only a few crystals such as LiNbO3, LiTaO3 and Nd:Y3Al5O12 have been successfully used in industrial applications. Recently, the development of new laser and nonlinear optical crystals has become a focus of considerable interest because of the progress of optoelectronics technologies. We have carried out the investigations focusing on the development of new optoelectronic and photonic materials, using advanced crystal growth techniques. Here, our research and progress in development of optoelectronic materials are introduced to propose one meritorious trend.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134293362","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}
Traditional mechanical drilling for making vias in a variety of dielectric materials, such as RF4, polimide, etc. and copper sheet are good for the via diameter greater than 200 micron.
{"title":"Solid State UV Laser and Its Application in Electronic Packaging","authors":"Y. Sun, E. Swenson","doi":"10.1364/sslma.1997.wa2","DOIUrl":"https://doi.org/10.1364/sslma.1997.wa2","url":null,"abstract":"Traditional mechanical drilling for making vias in a variety of dielectric materials, such as RF4, polimide, etc. and copper sheet are good for the via diameter greater than 200 micron.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132219215","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}
Ti:Al2O3 laser is one of new solid state tunable lasers. We developed a pulsed Ti:Al2O3 laser, which is pumped by an EO Q-switched frequency doubled pulsed Nd:YAG laser from two ends. It is shown in Fig.1. A prism is inserted into the resonator that uses as tunable element. By rotating HR(13) mirror, output wavelength can be tuned.
{"title":"A Computer-Controlled Tunable Pulsed Ti:Al2O3 Laser","authors":"J. Qiao, X. -. Li, J. Yao, P. Wang, F. Song","doi":"10.1364/sslma.1997.tub4","DOIUrl":"https://doi.org/10.1364/sslma.1997.tub4","url":null,"abstract":"Ti:Al2O3 laser is one of new solid state tunable lasers. We developed a pulsed Ti:Al2O3 laser, which is pumped by an EO Q-switched frequency doubled pulsed Nd:YAG laser from two ends. It is shown in Fig.1. A prism is inserted into the resonator that uses as tunable element. By rotating HR(13) mirror, output wavelength can be tuned.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123216606","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}
Accurate modelling of the transient behaviour of optical parametric oscillators (POPs) is of great importance for the understanding of many aspects of OPOs such as the build up of signal and idler fields from spontaneous parametric fluorescence, control and locking of the resonance mode, tuning and mode hopping and de-tuning due to heating effects. In this contribution we describe a numerical model, which takes into account all of the most important processes influencing the transient behaviour of an OPO. We then apply the model to two recent experimental observations: The growth of the signal and idler fields as an OPO is scanned through resonance by means of a piezoelectric mount for one of the resonators1 and the phenomenon of self-frequency locking.2,3 In both cases thermal effects due to even very small absorption losses in the nonlinear material modify the material properties of the OPO and lead to the observed complex behaviour. Comparison between the experimental data and the model data show that the model is able to account for all the observed features of the OPO output.
{"title":"Highly accurate dynamic modelling of optical parametric oscillators","authors":"P. Hansen, P. Buchhave","doi":"10.1364/sslma.1997.tud3","DOIUrl":"https://doi.org/10.1364/sslma.1997.tud3","url":null,"abstract":"Accurate modelling of the transient behaviour of optical parametric oscillators (POPs) is of great importance for the understanding of many aspects of OPOs such as the build up of signal and idler fields from spontaneous parametric fluorescence, control and locking of the resonance mode, tuning and mode hopping and de-tuning due to heating effects. In this contribution we describe a numerical model, which takes into account all of the most important processes influencing the transient behaviour of an OPO. We then apply the model to two recent experimental observations: The growth of the signal and idler fields as an OPO is scanned through resonance by means of a piezoelectric mount for one of the resonators1 and the phenomenon of self-frequency locking.2,3 In both cases thermal effects due to even very small absorption losses in the nonlinear material modify the material properties of the OPO and lead to the observed complex behaviour. Comparison between the experimental data and the model data show that the model is able to account for all the observed features of the OPO output.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114852658","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}
With the development of all-solid state laser systems for the green, blue and even UV coherent beams, there are extensive needs for NLO crystals which can perform harmonic generation in these regions. It may be for this promotion in recent years that great efforts have been made to successfully improve optical properties and quality of the existed NLO crystals (KTP, BBO and LBO), along with development of new generation of NLO crystals, for the UV region in particular. It is of interest to note that All these research works till now are almost concentrated in the Pacific rim area.
{"title":"Recent developments of NLO crystals in the visible and ultraviolet regions","authors":"Chuangtian Chen","doi":"10.1364/sslma.1997.wb2","DOIUrl":"https://doi.org/10.1364/sslma.1997.wb2","url":null,"abstract":"With the development of all-solid state laser systems for the green, blue and even UV coherent beams, there are extensive needs for NLO crystals which can perform harmonic generation in these regions. It may be for this promotion in recent years that great efforts have been made to successfully improve optical properties and quality of the existed NLO crystals (KTP, BBO and LBO), along with development of new generation of NLO crystals, for the UV region in particular. It is of interest to note that All these research works till now are almost concentrated in the Pacific rim area.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114781345","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 with periodically-patterned nonlinear susceptibilities offer qualitative improvement in nonlinear frequency conversion devices. Methods for patterning ferroelectric materials, generation of UV, visible and tunable IR radiation, ultrafast QPM nonlinear optics are discussed.
{"title":"Quasi-Phasematching, a New Approach for Material Engineering","authors":"M. Fejer","doi":"10.1364/sslma.1997.wb1","DOIUrl":"https://doi.org/10.1364/sslma.1997.wb1","url":null,"abstract":"Materials with periodically-patterned nonlinear susceptibilities offer qualitative improvement in nonlinear frequency conversion devices. Methods for patterning ferroelectric materials, generation of UV, visible and tunable IR radiation, ultrafast QPM nonlinear optics are discussed.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117048938","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}
D. Xu, Shiyi Guo, Guanghui Zhang, D. Yuan, Y. Bing, M. Jiang, Q. Ren
Electro-optic polymer films are interesting materials for their potential application in electro-optic switch and modulator, and significant progress in device design has been reported recently. Among many interesting properties, the major attraction of electro-optic polymer materials is their large electro-optic coefficients. Furthermore, as reported before, one of the important requirements in photonic device fabrication is the stability of the electro-optic response of the poled polymer materials. The intrinsic low dielectric constant, ease of processing into thin film, and compatibility with microelectronic process are the other major advantages of the organic polymer materials. Doped polymer films with high glass transition temperature Tg are promising in this respect.
{"title":"Study of the electro-optic polymer films with improved properties","authors":"D. Xu, Shiyi Guo, Guanghui Zhang, D. Yuan, Y. Bing, M. Jiang, Q. Ren","doi":"10.1364/sslma.1997.tha4","DOIUrl":"https://doi.org/10.1364/sslma.1997.tha4","url":null,"abstract":"Electro-optic polymer films are interesting materials for their potential application in electro-optic switch and modulator, and significant progress in device design has been reported recently. Among many interesting properties, the major attraction of electro-optic polymer materials is their large electro-optic coefficients. Furthermore, as reported before, one of the important requirements in photonic device fabrication is the stability of the electro-optic response of the poled polymer materials. The intrinsic low dielectric constant, ease of processing into thin film, and compatibility with microelectronic process are the other major advantages of the organic polymer materials. Doped polymer films with high glass transition temperature Tg are promising in this respect.","PeriodicalId":348889,"journal":{"name":"Solid State Lasers: Materials and Applications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121540065","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}
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