Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719213
H. Chen, J.R. Han, Y.G. Liu, F. S. Chen, B. Lu
Rare-earth pentaphosphates belong to the class of pure or stoichiometric laser media, exhibiting a concentration of active ions of the order of 1022cm-3. From 1974 H.G. Danielmeyer to 1995 F. Kaczmarek, they were all using the large container to grow rare-earth pentaphosphate crystals. Unfortunately, the crystals were always obtained in small size with plate-like shapes because of the strong evaporation caused by strong convection in the large growth system.
{"title":"Large Rare-Earth Pentaphoshate Laser Crystals Growth by Modified High Temperature Solution Method","authors":"H. Chen, J.R. Han, Y.G. Liu, F. S. Chen, B. Lu","doi":"10.1109/CLEOE.1998.719213","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719213","url":null,"abstract":"Rare-earth pentaphosphates belong to the class of pure or stoichiometric laser media, exhibiting a concentration of active ions of the order of 1022cm-3. From 1974 H.G. Danielmeyer to 1995 F. Kaczmarek, they were all using the large container to grow rare-earth pentaphosphate crystals. Unfortunately, the crystals were always obtained in small size with plate-like shapes because of the strong evaporation caused by strong convection in the large growth system.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124189038","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719009
V. Alekseev, V. N. Kotylev, V. Liber, A. Starikov
The feasibility of accurate control over direction of high power beam of a laser amplifier with a help of a signal generated by a low-power master-oscillator with an intracavity light-controlled spatial-time light modulator (STLM) of the PROM type was demonstrated in paper [1]. The PROM type modulator has a low optical strength (~0, 1 J / cm2) in respect to single-pulse radiation and a large period of reversal (~0, 1 s).
{"title":"YAG:Nd Scanning Laser System with Phase Conjugation and Master-Oscillator with PLZT-Based Intracavity Spatial-Time Light Modulator","authors":"V. Alekseev, V. N. Kotylev, V. Liber, A. Starikov","doi":"10.1109/CLEOE.1998.719009","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719009","url":null,"abstract":"The feasibility of accurate control over direction of high power beam of a laser amplifier with a help of a signal generated by a low-power master-oscillator with an intracavity light-controlled spatial-time light modulator (STLM) of the PROM type was demonstrated in paper [1]. The PROM type modulator has a low optical strength (~0, 1 J / cm2) in respect to single-pulse radiation and a large period of reversal (~0, 1 s).","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121274788","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719422
H. Chou, Gin-Chung Wang, Ching-Fuh Lin
{"title":"A Study of Quasi-Phase-Matched Second-Order Nonlinear Effects in Optical Waveguides Using an Iterative Finite-Difference Beam Propagation Method","authors":"H. Chou, Gin-Chung Wang, Ching-Fuh Lin","doi":"10.1109/CLEOE.1998.719422","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719422","url":null,"abstract":"","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114194217","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719394
V. Kelman, Y. Zhmenyak, A. Rybak, Y. Shpenik
A large progress was achieved during the 30-year period of development of the lasers on selfterminating transitions (RMT) - laser transitions from the upper resonant to the lower metastable levels. The number of obtained laser lines on RMT of atoms and ions is not less than 44. The parameters of lasing are also impressive: average power of 120 W (CuI transitions) can be generated from a single laser tube with record conversion efficiency for all types of high-power visible lasers (3.2%) based on stored energy. The same device gives a maximum average output power of 201 W with an efficiency of 1.9%.
自终止跃迁(RMT)是激光从上谐振能级跃迁到下亚稳能级的一种新方法，在30年的发展过程中取得了很大的进展。在原子和离子的RMT上得到的激光谱线数不少于44条。激光的参数也令人印象深刻:在所有类型的高功率可见激光器中，基于存储能量，单个激光管可以产生120 W (CuI跃变)的平均功率，具有创纪录的转换效率(3.2%)。该器件的最大平均输出功率为201 W，效率为1.9%。
{"title":"Search on the Lasing Action on the Titanium r - m Transitions","authors":"V. Kelman, Y. Zhmenyak, A. Rybak, Y. Shpenik","doi":"10.1109/CLEOE.1998.719394","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719394","url":null,"abstract":"A large progress was achieved during the 30-year period of development of the lasers on selfterminating transitions (RMT) - laser transitions from the upper resonant to the lower metastable levels. The number of obtained laser lines on RMT of atoms and ions is not less than 44. The parameters of lasing are also impressive: average power of 120 W (CuI transitions) can be generated from a single laser tube with record conversion efficiency for all types of high-power visible lasers (3.2%) based on stored energy. The same device gives a maximum average output power of 201 W with an efficiency of 1.9%.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116153861","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719233
T. Ohta, M. Kubota, T. Ichinose
Polarization switching in an internal mirror 633 nm He Ne laser caused by injection locking has been reported [1]. In the present paper, the switching characteristics in single mode operation is theoretically analyzed using vectrial injection locking theory [2]. Due to an intracavity birefringence, the slave laser (SL) has two natural polarization states which are orthogonally polarized with each other and there is slight frequency difference between these polarization states for the same longitudinal mode. The frequency of the master laser (ML) is scanned uni directionally (lower to higher for example) in the following description. When the injection locking frequency range (ILER) which is proportionally depends on injection intensity is greater than twice of the above birefringent caused frequency difference (BCFD), the polarization state of SI. switches alternatively by scanning the frequency of ML as shown in Fig. 1. If the ILER is less than the BCED, ILFRs of both polarization states do not overlap and the polarization switching does not occur. In the case of BCED < ILFR < 2 × BCFD, the polarization state of lower frequency switches to that of higher frequency, however polarization switching of reverse direction does not occur as shown in Figs. 2 (a) and (b). The calculated results are well agreed with the experimental results.
{"title":"Polarization Switching Mechanism in a Single-Mode He-Ne Laser Caused by Injection Locking","authors":"T. Ohta, M. Kubota, T. Ichinose","doi":"10.1109/CLEOE.1998.719233","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719233","url":null,"abstract":"Polarization switching in an internal mirror 633 nm He Ne laser caused by injection locking has been reported [1]. In the present paper, the switching characteristics in single mode operation is theoretically analyzed using vectrial injection locking theory [2]. Due to an intracavity birefringence, the slave laser (SL) has two natural polarization states which are orthogonally polarized with each other and there is slight frequency difference between these polarization states for the same longitudinal mode. The frequency of the master laser (ML) is scanned uni directionally (lower to higher for example) in the following description. When the injection locking frequency range (ILER) which is proportionally depends on injection intensity is greater than twice of the above birefringent caused frequency difference (BCFD), the polarization state of SI. switches alternatively by scanning the frequency of ML as shown in Fig. 1. If the ILER is less than the BCED, ILFRs of both polarization states do not overlap and the polarization switching does not occur. In the case of BCED < ILFR < 2 × BCFD, the polarization state of lower frequency switches to that of higher frequency, however polarization switching of reverse direction does not occur as shown in Figs. 2 (a) and (b). The calculated results are well agreed with the experimental results.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116263303","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.718935
Q. Jiang, T. Han, H. Gallagher
Potassium Lithium Niobate (KLN) has excellent potential as a non-linear medium for direct second harmonic generation (SHG) of semiconductor diode lasers. KLN crystallises in a tungsten bronze structure and space group P4bm within the compositional range K3−yLi2−x+yNb5+xO15+2x, 0.15
铌酸锂钾(KLN)作为半导体二极管激光器直接二次谐波产生(SHG)的非线性介质具有良好的潜力。KLN结晶为钨青铜结构，空间群P4bm，组成范围为K3−yLi2−x+yNb5+xO15+2x, 0.15 < x <2， -0.5
{"title":"Crystal Growth and Optical Properties of Potassium Lithium Niobate for Frequency Doubling of Diode Lasers","authors":"Q. Jiang, T. Han, H. Gallagher","doi":"10.1109/CLEOE.1998.718935","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.718935","url":null,"abstract":"Potassium Lithium Niobate (KLN) has excellent potential as a non-linear medium for direct second harmonic generation (SHG) of semiconductor diode lasers. KLN crystallises in a tungsten bronze structure and space group P4bm within the compositional range K3−yLi2−x+yNb5+xO15+2x, 0.15 <X <2, -0.5 <Y <0.6. It exhibits only one ferroelectric transition from a paraelectric to ferroelectric phase well above room temperature at a Curie point of around 420 °C. Previous results indicate that KLN possesses appropriate birefringence for non-critical phase matching (NCPM) in the wavelength range of interest and large non-linear optical coefficients for efficient SHG output at sub-milliwatt pump power levels [1].","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"164 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116283912","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719467
D. Dogas, C. Andreouli, T. Efthimiopoulos, M. Campbell, C. Savakis
{"title":"Photoacoustic Investigation of the Excimer Laser Ablation of YB/sub 2/Cu/sub 3/O/sub 7-x/ HTSC","authors":"D. Dogas, C. Andreouli, T. Efthimiopoulos, M. Campbell, C. Savakis","doi":"10.1109/CLEOE.1998.719467","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719467","url":null,"abstract":"","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121459012","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719166
I. Zawischa, S. Knoke, H. Zellmer, A. Tunnermann, H. Welling, O. S. Brozek, K. Danzmann, I. Freitag
High power low noise lasers are needed in high precision interferometric gravitational wave detection In the GEO-600 gravitational wave detector a relative intensity noise of less than 10-8/√Hz and a frequency stability better than 10-3/√Hz will be required. On power levels up to 2 W diode pumped non-planar monolithic Nd: YAG ring lasers (NPRO) are well known for their superior noise properties and their high potential for active stabilisation and intensity noise reduction [1].
{"title":"High Power Low Intensity Noise Single Frequency Light Sources at 1064 nm","authors":"I. Zawischa, S. Knoke, H. Zellmer, A. Tunnermann, H. Welling, O. S. Brozek, K. Danzmann, I. Freitag","doi":"10.1109/CLEOE.1998.719166","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719166","url":null,"abstract":"High power low noise lasers are needed in high precision interferometric gravitational wave detection In the GEO-600 gravitational wave detector a relative intensity noise of less than 10-8/√Hz and a frequency stability better than 10-3/√Hz will be required.\u0000 On power levels up to 2 W diode pumped non-planar monolithic Nd: YAG ring lasers (NPRO) are well known for their superior noise properties and their high potential for active stabilisation and intensity noise reduction [1].","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121459041","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719453
J. Andrade-Lucio, M. Iturbe-Castillo, P. A. Márquez-Aguilar, R. Ramos-García
{"title":"1D and 2D Self-Focusing in Photorefractive BaTiO/sub 3/ Crystal","authors":"J. Andrade-Lucio, M. Iturbe-Castillo, P. A. Márquez-Aguilar, R. Ramos-García","doi":"10.1109/CLEOE.1998.719453","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719453","url":null,"abstract":"","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121623217","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}
Pub Date : 1998-09-14DOI: 10.1109/CLEOE.1998.719561
W. Vos, J. Wijnhoven, M. Megens
Photonic crystals are 3D periodic composites of dielectric materials with lattice spacings of the order of wavelengths of light. Such crystals show stop gaps in the dispersion relations, that are revealed as optical Bragg reflections. If light interacts strongly with photonic crystals, stop gaps broaden and may merge to form photonic band gaps. In anticipation of band gaps, it is thus important what is a useful experimental probe of stop gaps, especially the widths. Previously, transmission measurements were done, and analyzed in terms of the width or the attenuation of the stop gaps. The interpretation of transmission experiments is severely hampered, however, by polycrystallinity or crystal imperfections, that are difficult to avoid.
{"title":"Experimental Probe of Gaps in Photonic Crystals","authors":"W. Vos, J. Wijnhoven, M. Megens","doi":"10.1109/CLEOE.1998.719561","DOIUrl":"https://doi.org/10.1109/CLEOE.1998.719561","url":null,"abstract":"Photonic crystals are 3D periodic composites of dielectric materials with lattice spacings of the order of wavelengths of light. Such crystals show stop gaps in the dispersion relations, that are revealed as optical Bragg reflections. If light interacts strongly with photonic crystals, stop gaps broaden and may merge to form photonic band gaps. In anticipation of band gaps, it is thus important what is a useful experimental probe of stop gaps, especially the widths. Previously, transmission measurements were done, and analyzed in terms of the width or the attenuation of the stop gaps. The interpretation of transmission experiments is severely hampered, however, by polycrystallinity or crystal imperfections, that are difficult to avoid.","PeriodicalId":404067,"journal":{"name":"CLEO/Europe Conference on Lasers and Electro-Optics","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114786695","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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