Laser emission at 4.5 THz from 15NH3 and a mid-infrared quantum-cascade laser as a pump source | Zendy

M. Wienold | Zendy; Alsu Zubairova | Zendy; HeinzWilhelm Hübers | Zendy

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Laser emission at 4.5 THz from ¹⁵NH₃ and a mid-infrared quantum-cascade laser as a pump source

Author(s) -

M. Wienold,

Alsu Zubairova,

HeinzWilhelm Hübers

Publication year - 2020

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.395832

Subject(s) - laser , terahertz radiation , far infrared laser , quantum cascade laser , optics , materials science , laser pumping , optical pumping , spectroscopy , infrared , optoelectronics , cascade , terahertz spectroscopy and technology , gas laser , continuous wave , physics , chemistry , chromatography , quantum mechanics

We present an optically pumped terahertz gas laser, which is based on a mid-infrared quantum-cascade laser as a pump source, a transversely pumped standing wave resonator, and 15 NH 3 as a gain medium. We observe several laser lines around 4.5 THz, corresponding to rotational transitions in the ν 2 band of ammonia. So far, these are the highest frequencies obtained from a QCL-pumped THz gas laser. The involved molecular transitions are unambiguously identified by high-resolution spectroscopy.

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