Compact sub-mW mid-infrared DFG laser source using direct-bonded QPM-LN ridge waveguide and laser diodes

Osamu Tadanaga; Yoshiki Nishida; Tsutomu Yanagawa; Katsuaki Magari; Takeshi Umeki; Masaki Asobe; Hiroyuki Suzuki

doi:10.1117/12.699753

14 February 2007 Compact sub-mW mid-infrared DFG laser source using direct-bonded QPM-LN ridge waveguide and laser diodes

Osamu Tadanaga, Yoshiki Nishida, Tsutomu Yanagawa, Katsuaki Magari, Takeshi Umeki, Masaki Asobe, Hiroyuki Suzuki

Author Affiliations +

Proceedings Volume 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI; 64550D (2007) https://doi.org/10.1117/12.699753
Event: Lasers and Applications in Science and Engineering, 2007, San Jose, California, United States

Abstract

We report compact sub-mW mid-infrared (IR) laser sources based on difference frequency generation (DFG) in a quasiphase matched (QPM) LiNbO₃ (LN) waveguide directly pumped with two laser diodes (LDs). The mid-IR lasers operate in the cw mode at ambient temperatures, and can be used for the tunable diode laser absorption spectroscopy (TDLAS). To construct the mid-IR laser sources, we employed a fiber-pigtailed wavelength conversion module, which we spliced to a direct-bonded QPM-LN ridge waveguide by using the V-groove connection technique. The modules had high external conversion efficiencies of 10 and 16 %/W for 3.4 and 2.6 &mgr;m, respectively. The signal was obtained from a 1.55-&mgr;m-band distributed feedback (DFB)-LD, and the pump from a single-mode LD stabilized with a fiber-Bragg-grating (FBG). We used 1.064 and 0.976-&mgr;m pump LDs for 3.4 and 2.6-(micron)m generation, respectively. The two LDs and the wavelength converter were assembled with a polarization maintaining fiber, and then packaged in a box. We obtained high outputs of up to 0.20 mW for the 3.4-&mgr;m laser source and 0.33 mW for the 2.6-&mgr;m laser source, and detected CH₄ and H₂O absorption lines with the 3.4 and 2.6-&mgr;m laser light sources, respectively.

Citation Download Citation

Osamu Tadanaga, Yoshiki Nishida, Tsutomu Yanagawa, Katsuaki Magari, Takeshi Umeki, Masaki Asobe, and Hiroyuki Suzuki "Compact sub-mW mid-infrared DFG laser source using direct-bonded QPM-LN ridge waveguide and laser diodes", Proc. SPIE 6455, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications VI, 64550D (14 February 2007); https://doi.org/10.1117/12.699753

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