Journal
INFRARED PHYSICS & TECHNOLOGY
Volume 111, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.infrared.2020.103553
Keywords
Solid-state lasers; Q-switched; Harmonic mode locking; Nd:GdTaO4
Categories
Funding
- National Natural Science Foundation of China (NSFC) [61605032, 61705165, 61775167, 61975150]
- National Key R&D Program of China [2018YFF01011104]
- Natural Science Foundation of Jiangsu Province [BK20180220]
- Six talent peaks project in Jiangsu Province [SWYY-285]
- Natural Science Foundation of Tianjin, China [18JCZDJC37900, 19JCZDJC38400]
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In this work, harmonic mode locking in a laser diode pumped passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser is presented by using Cr4+:YAG as saturable absorber. The average output power of the passively Q-switched mode-locked 1066 nm laser reaches 4.7 W with a repetition rate of 200.0 MHz and a pulse width of similar to 1.3 ns within a Q-switched envelope of 150.0 ns. By changing the Z-type cavity length, high-order harmonic mode locking operation of the passively Q-switched 1066 nm laser is conducted. The 3rd-order harmonically mode-locked 1066 nm laser yields a maximum average output power of 3.2 W and a pulse width of similar to 570 ps at 164.5 MHz repetition rate inside a Q-switched envelope of 419.7 ns long. The pulse repetition rate reaches 655.3 MHz in the 9th-order harmonically mode-locked 1066 nm laser.
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