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Advanced High-Power Lasers and Applications最新文献

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Conceptual design of a 20-kW cw 1.5-μm industrial FEL 20 kw连续波1.5 μm工业自由电子激光器的概念设计
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380899
E. Minehara
{"title":"Conceptual design of a 20-kW cw 1.5-μm industrial FEL","authors":"E. Minehara","doi":"10.1117/12.380899","DOIUrl":"https://doi.org/10.1117/12.380899","url":null,"abstract":"The JAERI superconducting rf linac based FEL has successfully been lased to produce a 0.3 kW FEL light and 100 kW or larger electron beam output in quasi continuous wave operation in 1999. The 1 kW class output as our present program goal will be achieved to improve the FEL lasing mode, optical out coupling method, electron gun, and electron beam optics in the JAERI FEL. As our next 5 year program goal is the 100 kW class FEL light and a few tens MW class electron beam output in average, quasi continuous wave operation of the light and electron beam will be planned in the JAERI superconducting rf linac based FEL facility. Conceptual and engineering design options needed for such a very high power operation and shorter wavelength light sources will be discussed to improve and to upgrade the existing facility.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126464933","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}
引用次数: 0
Design and performance of a short-pulse ultraviolet laser probe by cascade Raman scattering 级联拉曼散射短脉冲紫外激光探头的设计与性能
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380948
Shukui Zhang, J. Tang, X. D. Wang, L. F. Guo, Xiao-jun Huang, X. Zeng, Hua Liu, S. Wen
{"title":"Design and performance of a short-pulse ultraviolet laser probe by cascade Raman scattering","authors":"Shukui Zhang, J. Tang, X. D. Wang, L. F. Guo, Xiao-jun Huang, X. Zeng, Hua Liu, S. Wen","doi":"10.1117/12.380948","DOIUrl":"https://doi.org/10.1117/12.380948","url":null,"abstract":"This paper describes a short-pulse ultraviolet laser probe with multistage wavelength converters and nonlinear optical compression. Through fourth harmonic generation and double stage backward Raman scattering, pulses as short as 15 ps at 308 nm with more than 1 mJ energy and uniform beam pattern are successfully obtained. The whole probe system shows precise timing and good stability.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"164 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120871166","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}
引用次数: 0
Performance and reliability of high-intensity AlGaAs laser arrays 高强度AlGaAs激光阵列的性能和可靠性
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380928
Y. Nishikawa, H. Takigawa
{"title":"Performance and reliability of high-intensity AlGaAs laser arrays","authors":"Y. Nishikawa, H. Takigawa","doi":"10.1117/12.380928","DOIUrl":"https://doi.org/10.1117/12.380928","url":null,"abstract":"Changing the layer structure of the AlGaAs LD bars, the dependence of degradation on conversion efficiency and internal loss is examined in this paper. Using four kinds of LD bars mounted on the water-coolers, we measured output and aging characteristics. The internal loss estimated from the free carrier absorption has a close relationship with the degradation of the AlGaAs LD bars. On the other hand, in the region we examined, the conversion efficiency is not the dominant factor in determining the degradation. The free carrier absorption locally raises the lattice temperature and accelerates the propagation of defects in the lattice. On the other hand, the thermal power caused by the injection current uniformly raises the LD temperature and affects the local lattice in minimal manner. Therefore, the degradation dominantly depends on the internal loss.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132457945","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}
引用次数: 0
High-power semiconductor lasers: applications and progress 高功率半导体激光器:应用与进展
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380881
W. P. Latham, W. Cooley, G. Vansuch, T. Salvi
{"title":"High-power semiconductor lasers: applications and progress","authors":"W. P. Latham, W. Cooley, G. Vansuch, T. Salvi","doi":"10.1117/12.380881","DOIUrl":"https://doi.org/10.1117/12.380881","url":null,"abstract":"The United States government and industry have a long standing interest in developing high power semiconductor lasers for a variety of applications. These include material processing, long range sensing, and long range communications. The wavelength depends on the application, and sometimes on eye safety considerations. Key development goals are high brightness and high efficiency. This paper will review some of the applications, key laser performance features desired, and some of the accomplishments in high power diode lasers from the High Power Semiconductor Laser Technology program.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131314045","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}
引用次数: 0
Coaxially excited gas lasers: toward the vacuum ultraviolet region 同轴激发气体激光器:朝向真空紫外区
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380858
Mohamed A. El-Oseary, T. Jitsuno, M. Nakatsuka, Yasunari Ohoguchi, T. Ido, Kenshi Nakamura, S. Horiguchi
{"title":"Coaxially excited gas lasers: toward the vacuum ultraviolet region","authors":"Mohamed A. El-Oseary, T. Jitsuno, M. Nakatsuka, Yasunari Ohoguchi, T. Ido, Kenshi Nakamura, S. Horiguchi","doi":"10.1117/12.380858","DOIUrl":"https://doi.org/10.1117/12.380858","url":null,"abstract":"A new type of co-axial discharge gas laser has been developed for obtaining UV laser light. We have developed small co-axial discharge tubes of the inner diameters of 3 mm to 9 mm, and the lengths of 6 to 15 cm. The laser tube was made by ceramic pipe with two metallic electrodes at both ends. The excitation discharge was activated by using conventional capacitor transfer circuit with a special pre-ionization discharge through the ceramic pipe. The output energy of nitrogen laser was more than 0.7 mJ with pure nitrogen gas, and was about 0.1 mJ for XeCl laser. The repetition rate was increased up to 100 Hz without the high speed gas flow. This repetition rate was limited by the power supply, and no fatal degradation was observed.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114122944","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}
引用次数: 1
Single-mode Nd lasers with adaptive cavity and self-phase-conjugation 具有自适应腔和自相位共轭的单模Nd激光器
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380949
T. Basiev, A. Fedin, A. Gavrilov, Niranjan Kumar, Svetlana A. Kyalbieva, Andrey V. Ruliov, S. Smetanin, I. I. Trifonov
{"title":"Single-mode Nd lasers with adaptive cavity and self-phase-conjugation","authors":"T. Basiev, A. Fedin, A. Gavrilov, Niranjan Kumar, Svetlana A. Kyalbieva, Andrey V. Ruliov, S. Smetanin, I. I. Trifonov","doi":"10.1117/12.380949","DOIUrl":"https://doi.org/10.1117/12.380949","url":null,"abstract":"Self-pumped phase-conjugate multiloop Nd:YAG, Nd:YAP, and Nd:Glass lasers are investigated and developed. The parametric feedback is realized by dynamic holographic gratings in active and passive LiF:F2- Q-switcher medium. High power and spatial laser characteristics are obtained: Nd:YAG laser - - 114 W average power at 0.5 mrad beam divergence; Nd:YAP laser -- 51 W average power at 1.2 mrad beam divergence; Nd:Glass laser --18 J in pulse train at 1 mrad beam divergence.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121444948","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}
引用次数: 0
Use of CVD diamond in high-power CO2 lasers and laser diode arrays CVD金刚石在大功率CO2激光器和激光二极管阵列中的应用
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380930
H. Godfried, S. Coe, C. Hall, C. Pickles, R. Sussmann, X. Tang, W. K. van der Voorden
{"title":"Use of CVD diamond in high-power CO2 lasers and laser diode arrays","authors":"H. Godfried, S. Coe, C. Hall, C. Pickles, R. Sussmann, X. Tang, W. K. van der Voorden","doi":"10.1117/12.380930","DOIUrl":"https://doi.org/10.1117/12.380930","url":null,"abstract":"Recent advances in CVD diamond growth and processing technology allow this material to be used effectively in a number of high-power laser applications. New data will be presented on the optical properties at 10.6 micrometer relevant to the use of CVD diamond as optical elements in high-power CO2, lasers. It will be shown that with the current form shape capability, it is possible to achieve sub- fringe flatness (at 633 nm wavelength) on components with diameter greater than 100 mm and that shallow lens with radii of curvature greater than 10 m can be routinely produced. New results will be presented on the influence of the polycrystalline structure on the absolute absorption coefficient at 10.6 micrometer and on the laser damage thresholds, showing that the power density required to cause continuous wave laser damage in CVD diamond of high quality can be higher than that of current optical materials. Theoretical modeling results will be presented on the use of CVD diamond for the heat management of laser diode arrays. Issues such as thermal-mismatch-induced stress and form shape requirements for uniform operation will be discussed.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117074978","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}
引用次数: 14
Nd:YAG oscillator-amplifier with a photorefractive phase conjugator 带光折变相位共轭器的Nd:YAG振荡放大器
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380941
K. Tei, Y. Niwa, Masaaki Kato, F. Matsuoka, Y. Maruyama, T. Arisawa
{"title":"Nd:YAG oscillator-amplifier with a photorefractive phase conjugator","authors":"K. Tei, Y. Niwa, Masaaki Kato, F. Matsuoka, Y. Maruyama, T. Arisawa","doi":"10.1117/12.380941","DOIUrl":"https://doi.org/10.1117/12.380941","url":null,"abstract":"A ring type self-pumped phase-conjugate mirror with rhodium- doped barium titanate is used to correct aberrations of an LD- pumped sigzag slab Nd:YAG oscillator-amplifier system. A diffraction limited output of 360 mJ is achieved at the repetition rate of 100 Hz.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"50 12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129818508","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}
引用次数: 1
Optical thin films grown by surface chemical reaction for high-power lasers 高功率激光器用表面化学反应生长光学薄膜
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380929
S. Zaitsu, S. Motokoshi, T. Jitsuno, M. Nakatsuka, T. Yamanaka
{"title":"Optical thin films grown by surface chemical reaction for high-power lasers","authors":"S. Zaitsu, S. Motokoshi, T. Jitsuno, M. Nakatsuka, T. Yamanaka","doi":"10.1117/12.380929","DOIUrl":"https://doi.org/10.1117/12.380929","url":null,"abstract":"We prepared optical thin films grown with surface chemical reactions using TiCl4 and H2O for TiO2. The nonuniformity of thickness distribution was under 1% over 240 mm in diameter. The structure of TiO2 film grown at 25 degrees Celsius was amorphous. The structure changed into polycrystalline with an increase of growth temperature up to 400 degrees Celsius. Secondary ion mass spectrometry showed that chloride residents presented in the films at every growth temperature. However, these chloride residents could be removed by thermal annealing at 400 degrees Celsius. The TiO2 film at the growth temperature of 25 degrees Celsius had a laser-induced damage threshold of 5 J/cm2 for 1-ns, 1064 nm laser pulse. The damage threshold of TiO2 films decreased at higher growth temperature. Chloride in the films had no influence on the laser-induced damage threshold.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125402659","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}
引用次数: 0
Passively Q-switched Nd:S-VAP laser with a Cr4+:YAG crystal saturable absorber 含Cr4+:YAG晶体饱和吸收器的被动调q Nd:S-VAP激光器
Advanced High-Power Lasers and Applications Pub Date : 2000-04-03 DOI: 10.1117/12.380940
D. Shen, Cheng Li, Jien Song, K. Ueda
{"title":"Passively Q-switched Nd:S-VAP laser with a Cr4+:YAG crystal saturable absorber","authors":"D. Shen, Cheng Li, Jien Song, K. Ueda","doi":"10.1117/12.380940","DOIUrl":"https://doi.org/10.1117/12.380940","url":null,"abstract":"With Cr4+:YAG crystal as the saturable absorber, diode- pumped compact passively Q-switched Nd:S-VAP lasers have been demonstrated using a simple two-mirror linear cavity. When CW pumped with a 1 W high-brightness laser diode, stable laser pulses of duration of 2.9 ns and energy of 13.7 (mu) J are observed with kilohertz repetition rates. The highest peak power of 4.6 kW was obtained at an incident pump power of 904 mW.","PeriodicalId":375593,"journal":{"name":"Advanced High-Power Lasers and Applications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127607806","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}
引用次数: 0
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