Mid-infrared frequency comb for broadband high precision and sensitivity molecular spectroscopy
Mid-infrared frequency comb for broadband high precision and sensitivity molecular spectroscopy
复制标题
DOI：
10.1364/ol.39.005050
复制
发表时间：
2014-09-01
期刊：
影响因子：
3.6
通讯作者：
De Natale, P.
中科院分区：
文献类型：
--
作者：
Galli, I.;Bartalini, S.;De Natale, P.
报道了由钛宝石基近红外梳的非线性下转换过程产生的中红外梳的光谱特性的实验演示。将4330 nm的量子级联激光锁相到该中红外梳的单个齿上，并测量了其频率噪声功率谱密度。中红外梳本身也被用作多频高相干源，通过高精细度法布里-珀罗腔将其解复用，用游标技术执行环境空气直接梳光谱。(C)2014年美国光学学会
We report on the experimental demonstration of the metrological and spectroscopic performances of a mid-infrared comb generated by a nonlinear downconversion process from a Ti:sapphire-based near-infrared comb. A quantum cascade laser at 4330 nm was phase-locked to a single tooth of this mid-infrared comb and its frequency-noise power spectral density was measured. The mid-infrared comb itself was also used as a multifrequency highly coherent source to perform ambient air direct comb spectroscopy with the Vernier technique, by demultiplexing it with a high-finesse Fabry-Perot cavity. (C) 2014 Optical Society of America