Abstract

Coherent sources of infrared radiation in the wavelength of 2-4 μm are required for applications such as spectroscopy, sensors, infrared fibers, and laser radar. Although laser sources exist in the spectral region, difference-frequency mixing1 of near-infrared diode lasers offers the possibility of achieving mW-power levels of mid-infrared radiation in a compact, room-temperature device. This paper reports the application of periodically poled lithium niobate (LiNbO3) waveguides to the generation of coherent 2.1-μm radiation by room temperature, quais-phase-matched, difference-frequency mixing of 0.81-μm and 1.32-μn laser radiation

© 1991 Optical Society of America

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