5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003.最新文献_第10页

Transient self-action of a light beam in lithium niobate waveguide 铌酸锂波导中光束的瞬态自作用

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246099

V. Shandarov, E. Smirnov

引用次数: 0

Effect of externally applied electric field to a light beam self-action in a lithium niobate waveguide 外源电场对铌酸锂波导中光束自作用的影响

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246080

E. Smirnov, V. Shandarov

引用次数: 0

Active and passive materials for miniature diode-pumped 1.5 /spl mu/m erbium glass lasers 微型二极管泵浦1.5 /spl μ m /m铒玻璃激光器的有源和无源材料

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246139

B. Denker, B. Galagan, V. Osiko, S. Sverchkov

{"title":"Active and passive materials for miniature diode-pumped 1.5 /spl mu/m erbium glass lasers","authors":"B. Denker, B. Galagan, V. Osiko, S. Sverchkov","doi":"10.1109/LFNM.2003.1246139","DOIUrl":"https://doi.org/10.1109/LFNM.2003.1246139","url":null,"abstract":"The 3-level nature of erbium ions lasing at 1.5 /spl mu/m requires minimizing the volume of the active medium in order to reduce the lasing threshold. Efficient optical pumping of small volumes of bulk laser glass needs high pump extinction in the laser medium, i.e. as high Yb concentration as technologically possible. The main problem in this case is to avoid crystallization of the concentrated glasses. Our search for a stable concentrated glass composition resulted in developing a technologically producible Yb-Er glass containing 4.2/spl times/10/sup 21/ cm/sup -3/ of ytterbium ions about twice as usually used in commercially available laser glasses. This feature makes efficient pumping of small (2-3 mm) laser rods easily possible without bothering about the exact pump wavelength (in the range from /spl sim/850 to 1000 nm) and without LD array thermal stabilization. A secondary goal was the development of a new Yb-Er activated laser glass that should combine good laser efficiency and sufficiently higher thermo-mechanical properties them the available ones. We have investigated another cobalt-doped material for passive Q-switching of erbium glass lasers: magnesium-aluminum spinel MgAl/sub 2/O/sub 4/ grown by a number of methods: Czochralski, flux and Verneuil.","PeriodicalId":368970,"journal":{"name":"5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003.","volume":"20 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":"123894939","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

The third harmonic generation in a Bragg resonator on a film with quadratic nonlinearity 二次非线性薄膜上布拉格谐振腔的三次谐波产生

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246100

V. Borulko

引用次数: 2

Investigation of explosively pumped photo-dissociation iodine laser with phase conjugation of super-high quality 超高质量相位共轭爆炸泵浦光解碘激光器的研究

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246078

F. Starikov, Y. Dolgopolov, A. Dudov, N. Gerasimenko, G. A. Kirillov, G. Kochemasov, S. M. Kulikov, V. K. Ladagin, S. N. Pevny, A. F. Shkapa, S. Smyshlyaev, S. A. Sukharev, L. I. Zykov

{"title":"Investigation of explosively pumped photo-dissociation iodine laser with phase conjugation of super-high quality","authors":"F. Starikov, Y. Dolgopolov, A. Dudov, N. Gerasimenko, G. A. Kirillov, G. Kochemasov, S. M. Kulikov, V. K. Ladagin, S. N. Pevny, A. F. Shkapa, S. Smyshlyaev, S. A. Sukharev, L. I. Zykov","doi":"10.1109/LFNM.2003.1246078","DOIUrl":"https://doi.org/10.1109/LFNM.2003.1246078","url":null,"abstract":"Summary form only given results of simulations and experiments on a high-power double-pass explosively pumped photo-dissociation iodine laser (EPDL) with phase conjugation (PC) are presented. Laser system consists of master oscillator, two exploding amplifiers at working mixture 25 Torr C/sub 3/F/sub 7/I+125 Torr Xe and amplifier aperture 15 cm, and SBS mirror. SBS mirror consists of an angular selector of Stokes radiation, an ordered raster of small diffraction lenses, a main focusing lens, and a SBS cell. The calculation model and computer code package take into account actual three-dimensionality of space, nonsteady-state and transient effects at SBS and laser amplifications. An optimal configuration of the SBS mirror is used that possesses unique properties if compared to the current SBS mirrors. It stably gives a nearly ideal quality of PC at any reflection coefficient that has been experimentally confirmed. A good agreement of calculated results with experimental data has been shown in energy, time dependence of power and Strehl number of EPDL radiation. The EPDL has output energy of about 400 J and brightness of about 10/sup 12/J/ster. It has been found that under rising input signal of the master oscillator, the brightness of the EPDL increases whereas the full energy varies relatively slightly. It has been shown that parasitic reflections of laser radiation from the elements of the optical scheme with a coefficient exceeding 10/sup -7/ considerably decrease the axial brightness of output radiation. In order to reduce the harmful effect of parasitic reflections on brightness, the distance between the amplifiers should be increased.","PeriodicalId":368970,"journal":{"name":"5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003.","volume":"64 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":"125844270","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

Second harmonic generation by Bessel light beams in a nonlinear regime 非线性状态下贝塞尔光束的二次谐波产生

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246101

V. Belyi, N. Khilo, A.G. Maschenko

{"title":"Second harmonic generation by Bessel light beams in a nonlinear regime","authors":"V. Belyi, N. Khilo, A.G. Maschenko","doi":"10.1109/LFNM.2003.1246101","DOIUrl":"https://doi.org/10.1109/LFNM.2003.1246101","url":null,"abstract":"The summary form only given. The processes of summation-subtraction of frequencies of Bessel light beams (BLB) allow not only to tune a wavelength of laser radiation, but also to change the order of screw wavefront dislocations. Unlike Gaussian beams, Bessel beams permit to realize a multichannel nonlinear process, determined by the type of vector interaction. In the report the results of analytical examination and numerical simulation of multichannel nonlinear processes are presented on the example of SHG pumped by BLB. The fields at the fundamental and doubled frequencies in each channel are BLBs with different longitudinal and transverse wave numbers. Thereof each of SHG channels is characterized by the parameters of phase-mismatch and overlap integral. The given parameters express the requirements of longitudinal and transverse SHG phase-matching and determine the efficiency and spatial structure of radiation of the second harmonics. As a result, the SHG process, for example, of oo-e type, is described by a system of 2M coupled equations of the parabolic type, where M is the number of generation channels. The numerical solution of the given system of equations is carried out and the spatially-angular structure of the second harmonics field is obtained depending on the radial wave number and the width of input BLB at the fundamental frequency, its power, and also parameters of a nonlinear crystal. The regimes of generation of a single-component (ring or axial) and two-component SHG field, and also the tuning of the radius of a ring component are investigated at changing the direction of the collinear phase-matching.","PeriodicalId":368970,"journal":{"name":"5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003.","volume":"11214 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":"128833123","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

Increase and stabilisation of pulse frequency of the laser with phototropic modulator with help synchronizing resonant influence on particles of modulating environment 利用光致调制器提高和稳定激光脉冲频率，帮助同步共振对调制环境中的粒子的影响

5th International Workshop on Laser and Fiber-Optical Networks Modeling, 2003. Proceedings of LFNM 2003. Pub Date : 1900-01-01 DOI: 10.1109/LFNM.2003.1246083

M. M. Bykov, I. M. Rudchenko

引用次数: 0