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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 10 — May. 19, 2014
  • pp: 11592–11599

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

Polnop Samutpraphoot, Sophie Weber, Qian Lin, Dorian Gangloff, Alexei Bylinskii, Boris Braverman, Akio Kawasaki, Christoph Raab, Wilhelm Kaenders, and Vladan Vuletić  »View Author Affiliations

Optics Express, Vol. 22, Issue 10, pp. 11592-11599 (2014)

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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.

© 2014 Optical Society of America

OCIS Codes
(140.2020) Lasers and laser optics : Diode lasers
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

Original Manuscript: February 26, 2014
Revised Manuscript: April 13, 2014
Manuscript Accepted: April 21, 2014
Published: May 6, 2014

Polnop Samutpraphoot, Sophie Weber, Qian Lin, Dorian Gangloff, Alexei Bylinskii, Boris Braverman, Akio Kawasaki, Christoph Raab, Wilhelm Kaenders, and Vladan Vuletić, "Passive intrinsic-linewidth narrowing of ultraviolet extended-cavity diode laser by weak optical feedback," Opt. Express 22, 11592-11599 (2014)

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