Mid-infrared difference-frequency generation in periodically poled KTiOAsO4 and application to gas sensing

K. Fradkin-Kashi; A. Arie; P. Urenski; G. Rosenman

doi:10.1364/OL.25.000743

Mid-infrared difference-frequency generation in periodically poled KTiOAsO₄ and application to gas sensing

K. Fradkin-Kashi^*, A. Arie, P. Urenski, G. Rosenman

^*Corresponding author for this work

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Tunable mid-infrared radiation (3.45-3.75 μm) with a power level of 0.14 μW is generated by quasi-phase-matched difference-frequency mixing of a Nd:YAG laser and a tunable-diode laser (near 1.5 μm) in multigrating periodically poled KTiOAsO₄. The wavelength and temperature bandwidths are ≈65 nm cm and ≈62°C cm, respectively. The temperature-tuning slope of the phase-matched idler wavelength, -0.94 nm/°C, is almost twice that of periodically poled KTiOPO₄. We use the measurements to derive a mid-infrared-corrected Sellmeier equation for the Z axis of KTiOAsO₄. The generated mid-infrared radiation is applied to sensitive high-resolution spectroscopy of the ν₃ band of methane.

Original language	English
Pages (from-to)	743-745
Number of pages	3
Journal	Optics Letters
Volume	25
Issue number	10
DOIs	https://doi.org/10.1364/OL.25.000743
State	Published - 15 May 2000

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abstract = "Tunable mid-infrared radiation (3.45-3.75 μm) with a power level of 0.14 μW is generated by quasi-phase-matched difference-frequency mixing of a Nd:YAG laser and a tunable-diode laser (near 1.5 μm) in multigrating periodically poled KTiOAsO4. The wavelength and temperature bandwidths are ≈65 nm cm and ≈62°C cm, respectively. The temperature-tuning slope of the phase-matched idler wavelength, -0.94 nm/°C, is almost twice that of periodically poled KTiOPO4. We use the measurements to derive a mid-infrared-corrected Sellmeier equation for the Z axis of KTiOAsO4. The generated mid-infrared radiation is applied to sensitive high-resolution spectroscopy of the ν3 band of methane.",

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AU - Fradkin-Kashi, K.

AU - Arie, A.

AU - Urenski, P.

AU - Rosenman, G.

PY - 2000/5/15

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N2 - Tunable mid-infrared radiation (3.45-3.75 μm) with a power level of 0.14 μW is generated by quasi-phase-matched difference-frequency mixing of a Nd:YAG laser and a tunable-diode laser (near 1.5 μm) in multigrating periodically poled KTiOAsO4. The wavelength and temperature bandwidths are ≈65 nm cm and ≈62°C cm, respectively. The temperature-tuning slope of the phase-matched idler wavelength, -0.94 nm/°C, is almost twice that of periodically poled KTiOPO4. We use the measurements to derive a mid-infrared-corrected Sellmeier equation for the Z axis of KTiOAsO4. The generated mid-infrared radiation is applied to sensitive high-resolution spectroscopy of the ν3 band of methane.

AB - Tunable mid-infrared radiation (3.45-3.75 μm) with a power level of 0.14 μW is generated by quasi-phase-matched difference-frequency mixing of a Nd:YAG laser and a tunable-diode laser (near 1.5 μm) in multigrating periodically poled KTiOAsO4. The wavelength and temperature bandwidths are ≈65 nm cm and ≈62°C cm, respectively. The temperature-tuning slope of the phase-matched idler wavelength, -0.94 nm/°C, is almost twice that of periodically poled KTiOPO4. We use the measurements to derive a mid-infrared-corrected Sellmeier equation for the Z axis of KTiOAsO4. The generated mid-infrared radiation is applied to sensitive high-resolution spectroscopy of the ν3 band of methane.

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Mid-infrared difference-frequency generation in periodically poled KTiOAsO₄ and application to gas sensing

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