Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback

Author(s)
Samutpraphoot, Polnop; Weber, Sophie; Gangloff, Dorian; Bylinskii, Alexei; Braverman, Boris; ... Show more
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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.
Date issued
2014-05
URI
http://hdl.handle.net/1721.1/98463
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Research Laboratory of Electronics; MIT-Harvard Center for Ultracold Atoms
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.
Version: Original manuscript
ISSN
1094-4087
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