[15p-K308-1~9] 3.5 Ultrashort-pulse and high-intensity lasers

2:20 PM - 2:35 PM JST(5:20 AM - 5:35 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[15p-K308-5] Mid-IR Broadband Light Source using Intra-pulse Difference Frequency Generation in Quasi-Phase-Matched ZnSe Devices

〇(M2)Aoi Sato¹, Tokifumi Otani², Yuta Kuramoto², Ichiro Shoji², Satoshi Ashihara¹ (1.IIS, UTokyo, 2.Chuo Univ.)

Keywords:

quasi-phase-matching,intra-pulse difference frequency generation,mid-infrared

The purpose of this study is to develop a broadband coherent light source for spectroscopy of “molecular fingerprints” in the wavelength region above 6.7 µm (wavenumber below 1500 cm^-1). For this purpose, we have used intra-pulse difference frequency generation to convert the frequency of a Cr:ZnS mode-locked laser downward. For highly efficient wavelength conversion, we newly fabricated quasi-phase-matched ZnSe by room-temperature bonding and developed a broadband light source covering the wavelength range of 6.6-14.9 µm by using it.