Development of a mid-infrared tunable optical parametric oscillator pumped by a Q-switched Tm,Ho:YAG laser

Hisanao Hazama; Masaki Yumoto; Takayo Ogawa; Satoshi Wada; Kunio Awazu

doi:10.1117/12.875935

21 February 2011 Development of a mid-infrared tunable optical parametric oscillator pumped by a Q-switched Tm,Ho:YAG laser

Hisanao Hazama, Masaki Yumoto, Takayo Ogawa, Satoshi Wada, Kunio Awazu

Author Affiliations +

Proceedings Volume 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X; 79170N (2011) https://doi.org/10.1117/12.875935
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

A compact and high-energy pulsed mid-infrared laser using an optical parametric oscillator (OPO) has been developed using a diode-pumped and Q-switched Tm,Ho:YAG ceramic laser with a wavelength of 2.09 μm as a pump source. A singly-resonant OPO with a 20 mm long AgGaSe2 crystal was used, and the crystal was set at an angle normal to the pump beam. The output idler pulse energy was up to about 200 μJ with the pump energy of about 6 mJ for both the type I and type II phase matching conditions. The wavelength of the idler pulses was 5.97 and 6.37 μm for type I and type II, respectively. The output characteristics predicted using a model calculation were in good agreement with the experimental results. It is suggested that the output idler pulse energy in the experiment is limited by the surface damage threshold of the AgGaSe2 crystal. By increasing the pump beam diameter from 1 to 3 mm (3-fold) and the pump energy from 6 to 54 mJ (9-fold), the idler pulse energy of 1.8 mJ (= 200 μJ × 9) will be obtained without increasing the pump intensity and without saturation of the output idler pulse energy.

Citation Download Citation

Hisanao Hazama, Masaki Yumoto, Takayo Ogawa, Satoshi Wada, and Kunio Awazu "Development of a mid-infrared tunable optical parametric oscillator pumped by a Q-switched Tm,Ho:YAG laser", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 79170N (21 February 2011); https://doi.org/10.1117/12.875935

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

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.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available