光热折变体光栅变波长读出特性及稳定性研究
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摘要
光热折变体光栅是在光敏玻璃材料中利用光热折变效应记录的折射率型体全息光栅,具有波长和角度选择性好、衍射效率高、热稳定性好和抗损伤阈值高等特点,在激光器技术领域中具有独特的优势。在自行制备的光敏玻璃材料中,用325nm波长的紫外光曝光记录透射型体全息光栅,基于变波长读出的原理设计实验,对热显影后的光热折变体光栅在532nm波长的激光照射下的衍射读出特性以及其在恒定光功率密度的激光照射下的稳定性进行了实验研究。研究结果表明,热显影后的光热折变体光栅在激光辐照下具有光致饱和效应。根据实验结果定量计算出了光热折变体光栅的选择角和描述光致饱和效应的特征时间常数。
The photo-thermo-refractive(PTR) volume grating is formed by PTR effect in photo-sensitive glass.PTR volume holographic grating has unique advantages for the applications of laser technologies owing to its excellent wavelength and angular selectivity,high diffraction efficiency,high thermal stability and high damage threshold.The diffractive characteristics and stability of the photo-thermo-refractive volume grating are investigated.A transmission hologram is recorded under 325 nm laser exposure in the PTR glass.According to the principle of variable wavelength readout,experimental setup is designed for readout of transmission photo-thermo-refractive volume grating.The angular selectivity and the stability under laser irradiation of the transmission PTR volume grating after thermal development are measured experimentally.The photo-saturation effect is observed and a characteristic time constant is acquired through by fitting the calculation and experimental results to describe the stability.
The photo-thermo-refractive(PTR) volume grating is formed by PTR effect in photo-sensitive glass.PTR volume holographic grating has unique advantages for the applications of laser technologies owing to its excellent wavelength and angular selectivity,high diffraction efficiency,high thermal stability and high damage threshold.The diffractive characteristics and stability of the photo-thermo-refractive volume grating are investigated.A transmission hologram is recorded under 325 nm laser exposure in the PTR glass.According to the principle of variable wavelength readout,experimental setup is designed for readout of transmission photo-thermo-refractive volume grating.The angular selectivity and the stability under laser irradiation of the transmission PTR volume grating after thermal development are measured experimentally.The photo-saturation effect is observed and a characteristic time constant is acquired through by fitting the calculation and experimental results to describe the stability.
引文
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18Xiang Zhang,Xiao Yuan,Shang Wu et al..Two-dimensionalangular filtering by volume Bragg gratings in photo thermorefractive glass[J].Opt.Lett.,2011,36(11):2167～2169
19in Suqin,Zhang Bin.Analysis of the output characteristics ofhigh-power fiber lasers after spectral beam combination[J].ActaOptica Sinica,2011,31(2):0214002阴素芹,张彬.高功率光纤激光器谱合成系统的输出特性分析[J].光学学报,2011,31(2):0214002
20O.M.Efimov,L.B.Glebov,H.P.Andre.Measurement ofthe induced refractive index in a photo thermo refractive glass by aliquid-cell shearing interferometer[J].Appl.Opt.,2002,41(10):1864～1871
21Tao Shiquan,Jiang Zhuqing,Wang Dayong et al..HolographicOptics Storage[M].Beijing:Publishing House of BeijingUniversity of Technology,1998.79～120陶世荃,王大勇,江竹青等.光全息存储[M].北京工业大学出版社,1998.79～120
2Bai Yangbo,Xiang Wanghua,Zu Peng et al..Tunable twowavelengths linear-cavity Yb-doped fiber laser based on volumegrating[J].Chinese J.Lasers,2011,38(11):1102004白扬博,向望华,祖鹏等.基于体光栅的可调谐线型腔双波长掺镱光纤激光器[J].中国激光,2011,38(11):1102004
3Shen Wenmei,Jiang Zhuqing,Cheng Guofeng et al..Depthresolution of 90°geometry volume holographic imaging system[J].Laser&Optoelectronics Progress,2011,48(5):050901沈文梅,江竹青,程国锋等.90°邻面入射体全息成像系统的深度分辨率[J].激光与光电子学进展,2011,48(5):050901
4S.D.Stookey.Photosensitive glass—a new photographicmedium[J].Ind.Engng.Chem.,1949,41(4):856～861
5V.A.Borgman,L.B.Glebov,N.V.Nikonorov et al..Photothermal refractive effect in silicate glasses[J].Sov.Phys.Dokl.,1989,34:1011～1013
6L.B.Glebov,N.V.Nikonorov,E.I.Panysheva et al..Polychromic glasses—a new material for recording volume phaseholograms[J].Sov.Phys.Dokl.,1990,35:878～880
7O.M.Efimov,L.B.Glebov,L.N.Glebova et al..High-efficiency Bragg gratings in photothermorefractive glass[J].Appl.Opt.,1999,38(4):619～627
8L.B.Glebov,I.V.Ciapurin,L.N.Glebova et al..Bragggratings in a new photosensitive material-photo-thermo-refractiveglass[C].Monterey:Bragg Gratings,Photosensitivity,andPoling in Glass Waveguides,2003.MD27
9L.B.Glebov.Volume holographic elements in a photo-thermo-refractive glass[J].J.Holographic Speckle,2009,5(1):77～84
10Zhang Yu.Preparation and Charactistics of Photo-Thermo-Refractive Glass[D].Wuhan:Huazhong University of Science&Technology,2008.8～10张昱.光致热敏折射率玻璃的制备及其特性研究[D].武汉:华中科技大学,2008.8～10
11Ren Qing,Lu Min,Zou Kuaisheng,Li Weinanet al..Propertiesof photo-thermal-refractive glass[J].Infrared and LaserEngineering,2010,39(5):857～861任清,陆敏,邹快盛等.PTR微晶玻璃光热敏性能[J].红外与激光工程,2010,39(5):857～861
12Xiong Baoxing,Yuan Xiao,Zhang Xiang et al..Characteristicson the photo-thermal-refractive glass and volume Bragg gratings[J].Acta Optica Sinica,2012,32(8):0816001熊宝星,袁孝,张翔等.光热敏折变玻璃及其布拉格体光栅特性研究[J].光学学报,2012,32(8):0816001
13I.V.Ciapurin,V.I.Smirnov,L.B.Glebov.Characterizationof photo-thermo-refractive Bragg gratings in high-power IR laserbeams[C].Battimore:Comference on Lasers and Electro-Optics,2003.CThM27
14J.Lumeau,V.Smirnov,L.Glebov.Tunable ultra-narrowband-pass filters based on volume Bragg grating[C].LongBeoch:Conference on Lasers and Electro-Optics,2006.CWK1
15A.V.Okishev,C.Dorrer,V.I.Smirnov et al..Spectralfiltering in a diode-pumped Nd:YLF regenerative amplifier using avolume Bragg grating[J].Opt.Express,2007,15(13):8197～8202
16N.Vorobiev,V.Smirnov,L.Glebov.Single-frequency-modeQ-switched Nd:YAG laser controlled by volume Bragg grating[J].Opt.Express,2008,16(12):9199
17Hui Yongling,Li Qiang,Zhang Xiang et al..Single frequencymode laser controlled by volume Bragg gratings[J].Chinese J.Lasers,2009,36(11):2805～2807惠勇凌,李强,张翔等.基于体布拉格光栅选模的单纵模激光器[J].中国激光,2009,36(11):2805～2807
18Xiang Zhang,Xiao Yuan,Shang Wu et al..Two-dimensionalangular filtering by volume Bragg gratings in photo thermorefractive glass[J].Opt.Lett.,2011,36(11):2167～2169
19in Suqin,Zhang Bin.Analysis of the output characteristics ofhigh-power fiber lasers after spectral beam combination[J].ActaOptica Sinica,2011,31(2):0214002阴素芹,张彬.高功率光纤激光器谱合成系统的输出特性分析[J].光学学报,2011,31(2):0214002
20O.M.Efimov,L.B.Glebov,H.P.Andre.Measurement ofthe induced refractive index in a photo thermo refractive glass by aliquid-cell shearing interferometer[J].Appl.Opt.,2002,41(10):1864～1871
21Tao Shiquan,Jiang Zhuqing,Wang Dayong et al..HolographicOptics Storage[M].Beijing:Publishing House of BeijingUniversity of Technology,1998.79～120陶世荃,王大勇,江竹青等.光全息存储[M].北京工业大学出版社,1998.79～120