Frequency stabilization of a terahertz quantum-cascade laser to the Lamb dip of a molecular absorption line-Reference-Cited by-同舟云学术

Frequency stabilization of a terahertz quantum-cascade laser to the Lamb dip of a molecular absorption line

Published:2023-04-12 Issue:9 Volume:31 Page:13888
ISSN:1094-4087
Container-title:Optics Express
language:en
Short-container-title:Opt. Express

Author:

Voigt R.,Wienold M.¹,Jayasankar D.²,Drakinskiy V.²,Stake J.²^ORCID,Sobis P.³,Schrottke L.⁴^ORCID,Lü X.⁴,Grahn H. T.⁴,Hübers H.-W.¹

Affiliation:

1. Humboldt-Universität zu Berlin

2. Chalmers University of Technology

3. Low Noise Factory AB

4. Paul-Drude-Institut für Festkörperelektronik

Abstract

We demonstrate the frequency stabilization of a terahertz quantum-cascade laser (QCL) to the Lamb dip of the absorption line of a D2O rotational transition at 3.3809309 THz. To assess the quality of the frequency stabilization, a Schottky diode harmonic mixer is used to generate a downconverted QCL signal by mixing the laser emission with a multiplied microwave reference signal. This downconverted signal is directly measured by a spectrum analyzer showing a full width at half maximum of 350 kHz, which is eventually limited by high-frequency noise beyond the bandwidth of the stabilization loop.

Funder

Deutsche Forschungsgemeinschaft

Publisher

Optica Publishing Group

Reference26 articles.

1. High-resolution laboratory terahertz spectroscopy and applications to astrophysics;SchlemmerLaane,2018

2. Direct measurements of atomic oxygen in the mesosphere and lower thermosphere using terahertz heterodyne spectroscopy

3. QCL-based frequency metrology from the mid-infrared to the THz range: a review

4. Phase locking of a 15 Terahertz quantum cascade laser and use as a local oscillator in a heterodyne HEB receiver

5. Terahertz heterodyne spectrometer using a quantum cascade laser

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