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Fabricate 50-mm-long direct-bonded quasi-phase-matched LiNbO3 ridge waveguides and evaluate their efficiency for difference frequency generation in the 3-μm wavelength region for gas sensing.

February 3, 2006Applied Physics Letters

Efficient 3-μm difference frequency generation using direct-bonded quasi-phase-matched LiNbO3 ridge waveguides

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Authors

OTO. TadanagaKyoto University TYTsutomu YanagawaNTT (Japan)YNY. NishidaNTT (Japan)

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Implication

Experimental study demonstrates efficient mid-infrared light generation in direct-bonded lithium niobate waveguides, indicating potential for highly sensitive optical gas sensing.

Key Points

Fabricate 50-mm-long direct-bonded quasi-phase-matched LiNbO3 ridge waveguides and evaluate their efficiency for difference frequency generation in the 3-μm wavelength region for gas sensing.
Fabricated 50-mm-long direct-bonded quasi-phase-matched LiNbO3 ridge waveguides.
Combined a 1-μm-band pump beam and a 1.55-μm-band signal beam to produce difference frequency generation in the 3-μm wavelength band.
Tested the generated mid-infrared light output for optical detection of methane gas at approximately 3.3 μm.
Achieved a difference frequency generation conversion efficiency of 40%/W in the 3-μm wavelength range.
Generated an optical output power of 0.26 mW.
Demonstrated trace methane gas detection at around 3.3 μm.

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Tadanaga et al. (2006) studied this question.

synapsesocial.com/papers/6a91767fa84e863524466bc4 https://doi.org/10.1063/1.2172400

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Implication

Experimental study demonstrates efficient mid-infrared light generation in direct-bonded lithium niobate waveguides, indicating potential for highly sensitive optical gas sensing.

Efficient 3-μm difference frequency generation using direct-bonded quasi-phase-matched LiNbO3 ridge waveguides

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Implication

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Cite This Study

Efficient 3-μm difference frequency generation using direct-bonded quasi-phase-matched LiNbO3 ridge waveguides

Discussion

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Implication

Key Points

Cite This Study

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