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http://dx.doi.org/10.3807/KJOP.2009.20.5.276

Stabilization of Output Pulses from a Passively Q-switched Nd:YVO4 Laser Pumped by a Continuous-wave Laser Diode  

Ahn, Seung-In (Department of Science Education, Kyungpook National University)
Park, Yune-Bae (Department of Science Education, Kyungpook National University)
Yeo, Hwan-Seop (Gyeongsan Science High School)
Lee, Joon-Ho (Gyeongsan Science High School)
Lee, Kang-In (Department of Physics, Yeungnam University)
Yi, Jong-Hoon (Department of Physics, Yeungnam University)
Publication Information
Korean Journal of Optics and Photonics / v.20, no.5, 2009 , pp. 276-280 More about this Journal
Abstract
A Cr:YAG crystal was used as a saturable absorber for passive Q-switching of a Nd:$YVO_4$ laser which was pumped by a 1-W continuous wave laser diode. The first surface of the Cr:YAG was high-reflection coated for the pump wavelength. The high-reflection coating improved the absorption efficiency of the pump beam in the Nd:$YVO_4$ through double pass absorption. It also prevented pump beam induced partial bleaching of the Cr:YAG. The peak-to-peak pulse fluctuation of passively Q-switched laser output was approximately 4 %. The minimum pulse-width was measured to be 7.11 ns. Also, the average pulse repetition rate was 9 kHz and the maximum output power was 16.27 mW.
Keywords
Passive Q-switching; Pulsed laser; Diode-pumped; Solid-state laser; Cr:YAG;
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