International Conference on Laser and Laser Information Technologies最新文献_第3页

Coherent effects in the field of elliptically polarized light 椭圆偏振光场中的相干效应

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563213

C. Andreeva, V. Biancalana, S. Cartaleva, Y. Dancheva, T. Karaulanov, E. Mariotti, L. Moi, K. Nasyrov

{"title":"Coherent effects in the field of elliptically polarized light","authors":"C. Andreeva, V. Biancalana, S. Cartaleva, Y. Dancheva, T. Karaulanov, E. Mariotti, L. Moi, K. Nasyrov","doi":"10.1117/12.563213","DOIUrl":"https://doi.org/10.1117/12.563213","url":null,"abstract":"In the present communication we report on the investigation of the effect of elliptically polarized laser light exciting the Fg=3 Cs D2 absorption line. Coherent resonances in Cs have been studied, obtained in Hanle configuration by scanning of magnetic field parallel to the light propagation direction. The resonances were investigated depending on the polarization of the irradiating light field. It has been observed that for linear polarization dark resonances in the fluorescence are registered, while for circularly polarized light, bright resonances are obtained, probably due to stray orthogonal magnetic field. For elliptical polarization a narrow peak appears superimposed on a broader dip. Theoretical description has been made, which shows that at elliptical polarization and orthogonal magnetic field in the case of weak light fields, a single peak in the excited state population is observed, while strong fields lead to the splitting of this peak into two peaks. The presence of both weak and strong light fields, probably due to reflection of the light beam on the cell walls, could lead to the experimentally observed fluorescence behaviour.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129039071","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

Development of pulsed dual-wavelength lasers: improvement of the tuning characteristics using an active mirror 脉冲双波长激光器的发展:利用有源反射镜改善调谐特性

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563092

P. Uzunova, M. Deneva, M. Nenchev

引用次数: 0

On the stability of radio-frequency discharge 论射频放电的稳定性

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563118

I. Iliev, S. Gocheva, N. Sabotinov

引用次数: 2

Method for precise measurement of optical characteristics of light sources with correlation Fourier spectrometer 用相关傅立叶光谱仪精确测量光源光学特性的方法

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563207

K. Nedkova, B. Ivanov, E. Stoykova

{"title":"Method for precise measurement of optical characteristics of light sources with correlation Fourier spectrometer","authors":"K. Nedkova, B. Ivanov, E. Stoykova","doi":"10.1117/12.563207","DOIUrl":"https://doi.org/10.1117/12.563207","url":null,"abstract":"Observation of ultra-fast relaxation processes with time-constants below 1 ps in a wide spectral range can be made using a low-coherent light source, which is equivalent to a very short pulse in the non-linear correlation spectroscopy. The same approach can be used for very accurate and practically in real time determination of spectra of coherent and non-coherent light sources by recording and processing of their correlation functions. To check the proposed approach, we made a prototype of a correlation Fourier spectrometer based on a Michaelson interferometer and we developed a method for processing of the recorded interferograms which had been proved by a Monte-Carlo simulation. Different semiconductor light sources (LD, LED and high-power LED) were tested. The good quality of the obtained spectra was confirmed by comparison with OSA measurements (resolution 0.28 nm). The time required for data recording and spectrum restoration is within few seconds. This permits current tuning of the investigated sources, which extends their possible applications in spectroscopy, optical communications, computer technologies, etc.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132024715","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

Holographic feedback features at non-monochromatic radiation of lasers with self-forming four-wave mixing 自形成四波混频激光器非单色辐射全息反馈特征

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563117

M. G. Galushkin, K. Mitin, A. Seryogin, D. Zelenin

引用次数: 0

Comparison of growth rate, roughness, and surface morphology of Cu and W thin films prepared by pulsed laser deposition 脉冲激光沉积Cu和W薄膜的生长速率、粗糙度和表面形貌的比较

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563095

M. Michalka, F. Uherek, J. Bruncko

引用次数: 0

Development of new high-power copper bromide lasers 新型大功率溴化铜激光器的研制

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563106

N. Sabotinov

引用次数: 2

PbSe quantum-dot-doped phosphate glasses as material for saturable absorbers for 1- to 3-μm spectral region 以PbSe量子点掺杂磷酸盐玻璃为材料，制备了1 ~ 3 μm光谱区域的可饱和吸收剂

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563107

E. Kolobkova, A. Lipovskii, V. Melehin, Vladimir D. Petrikov, A. Malyarevich, V. Savitski

引用次数: 2

Nonuniform Bragg gratings for DWDM applications 用于DWDM应用的非均匀布拉格光栅

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563192

O. Baum, A. I. Khudobenko, G. Mishakov, V. Panchenko, V. Sokolov, A. Zherikhin

{"title":"Nonuniform Bragg gratings for DWDM applications","authors":"O. Baum, A. I. Khudobenko, G. Mishakov, V. Panchenko, V. Sokolov, A. Zherikhin","doi":"10.1117/12.563192","DOIUrl":"https://doi.org/10.1117/12.563192","url":null,"abstract":"The advent of the Dense Wavelength Division Multiplexing (DWDM) technology in Optical Fiber Networks (OFNs) has resulted in the necessity of developing advanced Optical Add/Drop Multiplexers (OADMs) on the basis of submicron Bragg gratings. The OADMs for dense multichannel OFNs with bit rates 10-40 Gbits/s per channel and channel spacing 200, 100 and 50 GHz must possess rectangular-shaped reflection/transmission spectra and linear phase characteristic within the stop/passband. These features can not be achieved using uniform Bragg gratings and therefore nonuniform gratings with space-modulated coupling coefficient and/or phase shifts π should be used. We present the recent advances in the design and fabrication of narrowband wavelength-selective filters for DWDM applications using submicron nonuniform Bragg gratings. The peculiarities of propagation, interaction and diffraction of electromagnetic waves in nonuniform grating structures are considered. Narrowband reflection filters using single-mode quartz fibers with side-polishing and relief gratings on dielectric and polymeric materials are designed and fabricated. The filters have nearly rectangular shape of the stopband with 0.4-1.6 nm width and peak reflectivity R > 99% in the 1.55 μm wavelength region. The architecture of multichannel OADMs for high-speed OFNs using planar polymer Integrated Photonic Circuits (IPCs) with biharmonic Bragg gratings, possessing phase shifts π, is discussed.","PeriodicalId":194489,"journal":{"name":"International Conference on Laser and Laser Information Technologies","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131411677","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

Light shift reduction in atomic clocks 原子钟中的光移减少

International Conference on Laser and Laser Information Technologies Pub Date : 2004-06-21 DOI: 10.1117/12.563196

C. Affolderbach, C. Andreeva, S. Cartaleva, T. Karaulanov, G. Mileti, D. Slavov

引用次数: 0