Journal
CHINESE OPTICS LETTERS
Volume 19, Issue 9, Pages -Publisher
Optica Publishing Group
DOI: 10.3788/COL202119.091403
Keywords
Nd:YSAG; periodically poled LiNbO3 superlattice; passively mode-locked laser
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Funding
- National Key Research and Development Project of China [2019YFA0705000]
- National Natural Science Foundation of China [91950106, 11404196, 11525418, 91750201, 11974218]
- Innovation Group of Jinan [2018GXRC010]
- Local Science and Technology Development Project of the Central Government [YDZX20203700001766]
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This paper presents a passively mode-locked Nd:Y3Sc2Al3O12 (Nd:YSAG) laser using a periodically poled LiNbO3 (PPLN) superlattice, where the modulation depth of the nonlinear mirror is approximately 8.8%. Experimental results show that an average output power of 710 mW with a slope efficiency of 14.6% was achieved at a pump power of 6.5 W.
In this paper, we report a passively mode-locked Nd:Y3Sc2Al3O12 (Nd:YSAG) laser using a periodically poled LiNbO3 (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.
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