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Iodine-stabilized laser at telecom wavelength using dual-pitch periodically poled lithium niobate waveguide
Optics Express ( IF 3.561 ) Pub Date : 2020-01-15 , DOI: 10.1364/oe.381961
Kohei Ikeda, Sho Okubo, Masato Wada, Ken Kashiwagi, Kazumichi Yoshii, Hajime Inaba, and Feng-Lei Hong

We demonstrate the third harmonic generation of a 1542-nm laser using a dual-pitch periodically poled lithium niobate waveguide with a conversion efficiency of 66%/W2. The generated 514-nm light is used for saturation spectroscopy of molecular iodine and laser frequency stabilization. The achieved laser frequency stability is 1.1×10−12 at an average time of 1 s, which is approximately one order of magnitude better than the acetylene-stabilized laser at 1542 nm. Uncertainty evaluation and absolute frequency measurement are also performed. The developed frequency-stabilized laser can be used as a reliable frequency reference at the telecom wavelength for various applications including optical frequency combs and precision interferometric measurement.
更新日期:2020-01-17

 

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