Theoretical analysis of periodically poled LiNbO3 nonlinear mirror and its application in a passively mode-locked Nd:YSAG laser

Lina Zhao; Fangxin Cai; Luyang Tong; Ye Yuan; Wenyu Zhang; Yangjian Cai

doi:10.3788/COL202119.091403

Journals >Chinese Optics Letters >Volume 19 >Issue 9 >Page 091403 > Article

Chinese Optics Letters
Vol. 19, Issue 9, 091403 (2021)

Theoretical analysis of periodically poled LiNbO₃ nonlinear mirror and its application in a passively mode-locked Nd:YSAG laser

Lina Zhao^1、2、*, Fangxin Cai¹, Luyang Tong¹, Ye Yuan¹, Wenyu Zhang¹, and Yangjian Cai^1、2、**

Author Affiliations

¹College of Physics and Electronics, Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250014, China

²Shandong Provincial Key Laboratory of Optics and Photonic Device, Jinan 250014, China

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DOI: 10.3788/COL202119.091403 Cite this Article Set citation alerts

Lina Zhao, Fangxin Cai, Luyang Tong, Ye Yuan, Wenyu Zhang, Yangjian Cai. Theoretical analysis of periodically poled LiNbO₃ nonlinear mirror and its application in a passively mode-locked Nd:YSAG laser[J]. Chinese Optics Letters, 2021, 19(9): 091403 Copy Citation Text

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Abstract

In this paper, we report a passively mode-locked

Nd : Y_{3} {Sc}_{2} {Al}_{3} O_{12}

(Nd:YSAG) laser using a periodically poled

{LiNbO}_{3}

(PPLN) superlattice. Nonlinear mirror mode locking based on PPLN intracavity frequency doubling was theoretically analyzed. The modulation depth of nonlinear reflectivity of the nonlinear mirror is approximately 8.8%. Optical performances of the mode-locked laser including output power, radio frequency spectrum, and optical spectrum were experimentally investigated. An average output power of 710 mW with a slope efficiency of 14.6% was obtained at the pump power of 6.5 W. The repetition rate is 101.7 MHz, and the signal-to-noise ratio of the mode-locked pulse is 45 dB. The mode-locked pulse width was approximately 9 ps.

Keywords

Nd:YSAG passively mode-locked laser periodically poled LiNbO3 superlattice