Highly coherent tunable mid-infrared frequency comb pumped by supercontinuum at 1 μm

被引：5
|
作者：
Jin, Lei [1 ]
Yamanaka, Masahito [1 ]
Sonnenschein, Volker [1 ]
Tomita, Hideki [1 ]
Iguchi, Tetsuo [1 ]
Sato, Atsushi [2 ]
Oh-hara, Toshinari [2 ]
Nishizawa, Norihiko [1 ]
机构：
[1] Nagoya Univ, Dept Quantum Engn, Nagoya, Aichi 4648603, Japan
[2] Sekisui Med Co Ltd, Tokai, Ibaraki 3191182, Japan
来源：
APPLIED PHYSICS EXPRESS | 2017年 / 10卷 / 01期
基金：
日本科学技术振兴机构;
关键词：
FIBER LASER; MID-IR; MOLECULAR-SPECTROSCOPY; GENERATION; BAND; OSCILLATOR; PULSES; RANGE;
D O I：
10.7567/APEX.10.012503
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report a tunable mid-infrared frequency comb working at 184 MHz, which is based on difference frequency generation in a periodically poled Mg-doped stoichiometric lithium tantalate (PPMgSLT) crystal pumped by high-power supercontinuum pulses. Supercontinuum pulses from two fibers with different dispersion properties were examined. With a photonic crystal fiber (PCF) having normal dispersion properties, a tunable wavelength range of 2.9-4.7 mu m was achieved. With another PCF having zero dispersion at 1040 nm, a maximum power of 1.34mW was observed at 3.9 mu m. The high coherence of the pulses generated with this scheme was verified experimentally, and a fringe visibility of 0.90 was observed. (C) 2017 The Japan Society of Applied Physics
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页数：4
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