Output characteristics of a passively Q-switched diode-laser pumped ceramic Nd:YAG laser

Duck-Lae Kim; Beom-Seok Lee; Hee-Sang Yoo; Jae-Yong Jeong; Yeong-Sik Kim

doi:10.1117/12.762227

14 February 2008 Output characteristics of a passively Q-switched diode-laser pumped ceramic Nd:YAG laser

Duck-Lae Kim, Beom-Seok Lee, Hee-Sang Yoo, Jae-Yong Jeong, Yeong-Sik Kim

Proceedings Volume 6871, Solid State Lasers XVII: Technology and Devices; 68712I (2008) https://doi.org/10.1117/12.762227
Event: Lasers and Applications in Science and Engineering, 2008, San Jose, California, United States

Abstract

A passively Q-switched diode-laser pumped ceramic Nd:YAG laser has been constructed and the output characteristics has been investigated. The output efficiency of 36.1 % has been obtained with 1.1 at.% of neodymium concentration in the ceramic YAG. For the case of neodymium concentration of 2.0 at.%, the output power decreases as the pump power increases over 6 W. The output power has rapidly decreased more than 10 W of pumping, and the laser output has finally disappeared at pumping power of 13 W. This phenomenon can be explained by the thermal lens effect in the laser material. Passive Q-switching has been carried out using a Cr:YAG crystal in the resonator. The pulse width is 61.2 ns and the repetition rate is 10.1 kHz at the pump power of 1 W. The beam propagation factor M² has been measured to be 1.2, which shows good beam quality of the Q-switched pulse.

Citation Download Citation

Duck-Lae Kim, Beom-Seok Lee, Hee-Sang Yoo, Jae-Yong Jeong, and Yeong-Sik Kim "Output characteristics of a passively Q-switched diode-laser pumped ceramic Nd:YAG laser", Proc. SPIE 6871, Solid State Lasers XVII: Technology and Devices, 68712I (14 February 2008); https://doi.org/10.1117/12.762227

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KEYWORDS

Nd:YAG lasers

Ceramics

Thermal effects

Q switched lasers

Output couplers

Crystals

Laser resonators

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