基于相干衰减器的半高斯激光束的产生实验研究

doi:10.3969/j.issn.1000-5641.2017.03.009

华东师范大学学报(自然科学版) ›› 2017, Vol. ›› Issue (3): 87-93,132.doi: 10.3969/j.issn.1000-5641.2017.03.009

基于相干衰减器的半高斯激光束的产生实验研究

方彬, 尹亚玲, 叶张东, 茅志翔, 郭超修, 夏勇

华东师范大学物理与材料科学学院精密光谱科学与技术国家重点实验室, 上海 200062

收稿日期:2016-04-16 出版日期:2017-05-25 发布日期:2017-05-18
通讯作者: 尹亚玲,女,副教授,研究方向为激光光学、材料光学、原子分子与量子光学.E-mail:ylyin@phy.ecnu.edu.cn E-mail:ylyin@phy.ecnu.edu.cn
作者简介:方彬,男,本科生,研究方向为激光光学.E-mail:fangbin1752@163.com
基金资助:
国家自然科学基金（11274114）；华东师范大学大夏基金（2014DX-055）

Experimental generation of a neat semi-Gaussian laser beam with a coherence attenuator

FANG Bin, YIN Ya-ling, YE Zhang-dong, MAO Zhi-xiang, GUO Chao-xiu, XIA Yong

State Key Laboratory of Precise Spectroscopy, School of Physics and Materials Science, East China Normal University, Shanghai 200062, China

Received:2016-04-16 Online:2017-05-25 Published:2017-05-18

摘要/Abstract

摘要： 根据之前的理论分析（Yaling Yin，et al，Opt.Commun.281（22），5511（2008）），实验上设计了一个由相干衰减器和锋利薄刀片构成的产生无衍射条纹的纯净半高斯激光束的简单光学装置.装置中相干衰减器由两片有机玻璃片和一片塑料薄膜构成，并由马达驱动，该相干衰减器可以有效降低激光场的相干度.实验中，选择氦-氖激光作为实验光源，在传输位置z=0.5cm处获得了品质因子Q_SGB=1∶16.42的无衍射条纹的纯净半高斯激光束.实验结果显示，产生的半高斯激光束的品质因子随着传输距离的增加而减少，产生的半高斯激光束的陡峭上升沿的宽度与入射高斯光束的波长和束腰半径无关，这与之前的理论计算结果一致.实验上产生的半高斯激光束因为具有非对称性的强度分布、优良的空间传输特性，所以在现代光学中有广泛的应用.

关键词: 半高斯激光束, 相干衰减器, 传输特性

Abstract: Based on our former theoretical analysis [Yaling Yin, et al, Opt. Commun. 281(22), 5511 (2008)], we experimentally design a simple optical device to generate a neat semi-Gaussian laser beam (SGB) without diffraction fringes by using a coherence attenuator and a thin sharp blade. The coherence attenuator is composed of two organic glasses and a piece of plastic film rotated by a motor, which can efficiently decrease the coherence of the laser field. In the experiment, we use He-Ne laser as light source and obtain a 632.8 nm neat SGB without diffraction fringes with a quality factor Q_SGB = 1: 16.42 at the propagating position z = 0.5 cm. The experimental results show that the generated SGB's quality factor decreases with the increasing of the propagating distance. The ascent border width of the generated SGB is independent on the waist radius and wavelength of the incident Gaussian beam, which corresponds well with the theoretical analysis. Our generated SGB can be widely used in modern optics for its asymmetric intensity profile and good propagating properties.

Key words: semi-Gaussian laser beam, coherence attenuator, propagating properties

中图分类号:

O431

方彬, 尹亚玲, 叶张东, 茅志翔, 郭超修, 夏勇. 基于相干衰减器的半高斯激光束的产生实验研究[J]. 华东师范大学学报(自然科学版), 2017, (3): 87-93,132.

FANG Bin, YIN Ya-ling, YE Zhang-dong, MAO Zhi-xiang, GUO Chao-xiu, XIA Yong. Experimental generation of a neat semi-Gaussian laser beam with a coherence attenuator[J]. Journal of East China Normal University(Natural Sc, 2017, (3): 87-93,132.

参考文献

[1] YIN J P, GAO W J, ZHU Y F. Generation of dark hollow beams and their applications [J]. Prog Opt, 2003, 45: 119-204.
[2] SCHWEIGER G, NETT R, OZEL B, et al. Generation of hollow beams by spiral rays in multimode light guides[J]. Opt Express, 2010, 18(5): 4510-4517.
[3] GRANATA M, BUY C, WARD R, et al. Higher-order Laguerre-Gauss mode generation and interferometry for gravitational wave detectors [J]. Phys Rev Lett, 2010, 105(23): 2555-2558.
[4] BéLANGER P A, LACHANCE R L, PARé C. Super-Gaussian output from a CO₂ laser by using a graded-phase mirror resonator [J]. Opt Lett, 1992, 17(10): 739-741.
[5] KASINSKI J J, BURNHAM R L. Near-diffraction-limited laser beam shaping with diamond-turned aspheric optics [J]. Opt Lett, 1997, 22(14): 1062-1064.
[6] LIU J S, TAGHIZADEH M R. Iterative algorithm for the design of diffractive phase elements for laser beam shaping [J]. Opt Lett, 2002, 27(16): 1463-1465.
[7] IMESHEV G, PROCTOR M, FEJER M M. Lateral patterning of nonlinear frequency conversion with trans-versely varying quasi-phase-matching gratings [J]. Opt Lett, 1998, 23(9): 673-675.
[8] YIN Y L, XIA Y, YIN J P. A neat semi-Gaussian laser beam with no diffraction fringes: Theoretical analysis[J]. Opt Commun, 2008, 281(22): 5511-5514.
[9] YIN Y L, LYU X J, ZHAO L N, et al. Nonlinear generation of a neat semi-Gaussian laser beam with a transversely varying periodically-poled LiTaO₃ crystal [J]. Opt Express, 2011, 19(6): 5297-5302.
[10] ELLENBOGEN T, VOLOCH-BLOCH N, GANANY-PADOWICZ A, et al. Nonlinear generation and manipula-tion of Airy beams [J]. Nat Photonics, 2009, 3(7): 395-398.
[11] DING Y J, GUO C L, SWARTZLANDER G A, et al. Spectral measurement of the nonlinear refractive index in ZnSe using self-bending of a pulsed laser beam [J]. Opt Lett, 1990, 15(24): 1431-1433.
[12] YIN Y L, XIA Y, YIN J P. Deceleration of a continuous-wave (CW) molecular beam with a single quasi-CW semi-Gaussian laser beam [J]. Chin Phys B, 2008, 17(10): 3672-3676.
[13] ZHENG P, GAO W J, YIN J P. Novel atomic mirror with a blue-detuned semi-Gaussian beam [J]. Chin Phys Lett, 2003, 20(3): 379-382.
[14] XIE C X, WANG Z L, YIN J P. A Novel Gravito-Optical Surface Trap for Neutral Atoms [J]. Chin Phys Lett, 2006, 23(4): 822-825.
[15] YIN Y L, ZHOU Q, XIA Y, et al. A novel mirror for cold molecules with a semi-Gaussian beam [J]. Chin Phys Lett, 2008, 25(9): 3215-3218.
[16] LI J C, MERLIN J, PEREZ J. Etude comparative de différents dispositifs permettant de transformer un faisceau laser de puissance avec une répartition énergétique gaussienne en une répartition uniforme [J]. Rev Phys Appl, 1986, 21: 425-433.
[17] GUO C X, LING C, DU X L, et al. Theoretical study on propagation properties of semi-Gaussian laser beam[J]. Laser & Optoelectronics Progress, 2013, 50: 121405-121431.
[18] BORN M, WOLF E. Principles of Optics [M]. Cambridge: Cambridge University Press, 1980.

基于相干衰减器的半高斯激光束的产生实验研究

Experimental generation of a neat semi-Gaussian laser beam with a coherence attenuator

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 4

编辑推荐

Metrics

本文评价

[1]	刘洋, 刘博通, 杨岩, 孙真荣. 溴丙烯在800 nm和400 nm飞秒激光强场下的解离电离[J]. 华东师范大学学报(自然科学版), 2019, 2019(3): 110-119.
[2]	彭雪影，贾天卿，孙真荣. 飞秒激光在对氨基偶氮苯薄膜表面上制备微偏振元件[J]. 华东师范大学学报(自然科学版), 2012, 2012(5): 10-15.
[3]	张志军;李晋芳;马雷. 量子信息实验设计的算符分析[J]. 华东师范大学学报(自然科学版), 2006, 2006(1): 120-125.
[4]	李晋芳;张志军;马雷. 传送光场薛定谔猫态的新方案[J]. 华东师范大学学报(自然科学版), 2005, 2005(4): 32-36.