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Crystals 2019, 9(4), 201;

High Stability LED-Pumped Nd:YVO4 Laser with a Cr:YAG for Passive Q-Switching

1,2,3, 1,2,3,*, 1,2,3, 1,2,3, 1,2, 1,2, 1,2,3,*, 1,2,3 and 1,2
Aerospace Information Research Insititute, Chinese Academy of Science, Beijing 100094, China
National Engineering Research Center for DPSSL, Beijing 100094, China
University of Chinese Academy of Sciences, Beijing 100049, China
Authors to whom correspondence should be addressed.
Received: 23 February 2019 / Revised: 13 March 2019 / Accepted: 14 March 2019 / Published: 10 April 2019
(This article belongs to the Special Issue Recent Advances in Light-Emitting Diodes (LEDs))
PDF [3115 KB, uploaded 12 April 2019]


With improvements in light-emitting diode (LED) performance and a sharp decline in price, a light source with the irradiance of a laser and the cost of an LED is worthy of further study. We demonstrated a LED-pumped Nd:YVO4 laser in quasi-continuous-wave (QCW) and passively Q-switched (PQS) regime. With an incident pump energy of 6.28 mJ (150 μs pulses at 1 Hz), the Nd:YVO4 laser has an energy of 206 μJ at 1064 nm in the QCW regime. The optical conversion efficiency of the system is 4.1%, and the slope efficiency is 9.0%. A pulsed energy of 2.5 μJ was obtained with a duration of 897 ns (FWHM) in the PQS regime, which means the peak power is 2.79 W. The output energy stability is 97.54%. View Full-Text
Keywords: (140.3580) lasers; solid-state; (230.3670) light-emitting diodes; (140.3540) lasers; Q-switched; (140.5560) pumping (140.3580) lasers; solid-state; (230.3670) light-emitting diodes; (140.3540) lasers; Q-switched; (140.5560) pumping

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Xiao, H.; Zhao, T.; Ge, W.; Zhong, Q.; Li, M.; Yu, J.; Fan, Z.; Bian, S.; Chen, Y. High Stability LED-Pumped Nd:YVO4 Laser with a Cr:YAG for Passive Q-Switching. Crystals 2019, 9, 201.

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