中国物理B ›› 2015, Vol. 24 ›› Issue (12): 124205-124205.doi: 10.1088/1674-1056/24/12/124205

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Analytical model for thermal lensing and spherical aberration in diode side-pumped Nd:YAG laser rod having Gaussian pump profile

M H Moghtader Dindarlu, M Kavosh Tehrani, H Saghafifar, A Maleki   

  1. Institute of Optics and Laser, Malek-Ashtar University of Technology, Shahin Shahr, Postal Code, 83145/115, Iran
  • 收稿日期:2015-05-18 修回日期:2015-06-23 出版日期:2015-12-05 发布日期:2015-12-05
  • 通讯作者: M H Moghtader Dindarlu E-mail:elsa27m@gmail.com

Analytical model for thermal lensing and spherical aberration in diode side-pumped Nd:YAG laser rod having Gaussian pump profile

M H Moghtader Dindarlu, M Kavosh Tehrani, H Saghafifar, A Maleki   

  1. Institute of Optics and Laser, Malek-Ashtar University of Technology, Shahin Shahr, Postal Code, 83145/115, Iran
  • Received:2015-05-18 Revised:2015-06-23 Online:2015-12-05 Published:2015-12-05
  • Contact: M H Moghtader Dindarlu E-mail:elsa27m@gmail.com

摘要: In this paper, according to the temperature and strain distribution obtained by considering the Gaussian pump profile and dependence of physical properties on temperature, we derive an analytical model for refractive index variations of the diode side-pumped Nd:YAG laser rod. Then we evaluate this model by numerical solution and our maximum relative errors are 5% and 10% for variations caused by thermo-optical and thermo-mechanical effects; respectively. Finally, we present an analytical model for calculating the focal length of the thermal lens and spherical aberration. This model is evaluated by experimental results.

关键词: side-pumped laser rod, Gaussian pump profile, thermal effects, thermal lens, spherical aberration

Abstract: In this paper, according to the temperature and strain distribution obtained by considering the Gaussian pump profile and dependence of physical properties on temperature, we derive an analytical model for refractive index variations of the diode side-pumped Nd:YAG laser rod. Then we evaluate this model by numerical solution and our maximum relative errors are 5% and 10% for variations caused by thermo-optical and thermo-mechanical effects; respectively. Finally, we present an analytical model for calculating the focal length of the thermal lens and spherical aberration. This model is evaluated by experimental results.

Key words: side-pumped laser rod, Gaussian pump profile, thermal effects, thermal lens, spherical aberration

中图分类号:  (Diode-pumped lasers)

  • 42.55.Xi
42.25.Lc (Birefringence) 42.25.Bs (Wave propagation, transmission and absorption)