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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 14 — Jul. 15, 2014
  • pp: 4227–4230

Optical injection unlocking for cavity ringdown spectroscopy

Greg Bostrom, Andrew Rice, and Dean Atkinson  »View Author Affiliations

Optics Letters, Vol. 39, Issue 14, pp. 4227-4230 (2014)

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Continuous wave cavity ringdown spectroscopy requires a rapid termination of the injection of light into the cavity to initiate the decay (i.e., ringdown) event. We demonstrate a technique that accomplishes this through pulsed optical injection of a second laser into the main laser, resulting in 20–100 MHz frequency shifts in the otherwise cavity-locked main laser sufficient to create ringdown events at 3.5 kHz. Data on the frequency shift as a function of both main laser current and relative wavelength are presented, as well as a demonstration that single exponential decays are maintained in the process.

© 2014 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(140.2020) Lasers and laser optics : Diode lasers
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(140.3520) Lasers and laser optics : Lasers, injection-locked
(300.6260) Spectroscopy : Spectroscopy, diode lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 6, 2014
Revised Manuscript: June 13, 2014
Manuscript Accepted: June 13, 2014
Published: July 14, 2014

Greg Bostrom, Andrew Rice, and Dean Atkinson, "Optical injection unlocking for cavity ringdown spectroscopy," Opt. Lett. 39, 4227-4230 (2014)

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