We reported a mid-infrared intra-cavity ZnGeP2 optical parametric oscillator (ZGP OPO) pumped by an acousto-optic (AO) Q-switched Ho:YAG oscillator. The 1908nm laser with an output power of 20W was used as the pump source of the Ho:YAG AO Q-switched oscillator. ZGP OPO was placed inside the Ho:YAG oscillator. Under the Q-switched repetition frequency of 5kHz, the maximum output power of the mid-infrared laser was 1.5W. The optical-optical conversion efficiency of the 1908nm laser to the mid-infrared laser was 7.5%, and the slope efficiency was 15%. The two central wavelengths of mid-infrared laser were located at 3.9~4.05μm and 4.35~4.5μm respectively. The pulse width was 29.9ns and the single-pulse energy was 0.3mJ.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.