Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback
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Author(s)
Samutpraphoot, Polnop
Weber, Sophie
Gangloff, Dorian
Bylinskii, Alexei
Braverman, Boris
Kawasaki, Akio
Raab, Christoph
Kaenders, Wilhelm
Vuletic, Vladan
Lin, Qian, Ph. D. Massachusetts Institute of Technology
Date Issued
May 2014
Journal
Optics Express
Publisher
Optical Society of America
Citation
Samutpraphoot, Polnop, Sophie Weber, Qian Lin, Dorian Gangloff, Alexei Bylinskii, Boris Braverman, Akio Kawasaki, Christoph Raab, Wilhelm Kaenders, and Vladan Vuletic. “Passive Intrinsic-Linewidth Narrowing of Ultraviolet Extended-Cavity Diode Laser by Weak Optical Feedback.” Optics Express 22, no. 10 (2014): 11592.
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Original manuscript
Abstract
We present a simple method for narrowing the intrinsic Lorentzian linewidth of a commercial ultraviolet grating extended-cavity diode laser (TOPTICA DL Pro) using weak optical feedback from a long external cavity. We achieve a suppression in frequency noise spectral density of 20 dB measured at frequencies around 1 MHz, corresponding to the narrowing of the intrinsic Lorentzian linewidth from 200 kHz to 2 kHz. Provided additional active low-frequency noise suppression and long-term drift compensation, the system is suitable for experiments requiring a tunable ultraviolet laser with narrow linewidth and low high-frequency noise, such as precision spectroscopy, optical clocks, and quantum information science experiments.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1364/OE.22.011592
