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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 34, Iss. 14 — Jul. 15, 2009
  • pp: 2225–2227

FM-eliminated C 2 H 2 frequency-stabilized laser diode with an RIN of 135 dB Hz and a linewidth of 4 kHz

Keisuke Kasai and Masataka Nakazawa  »View Author Affiliations

Optics Letters, Vol. 34, Issue 14, pp. 2225-2227 (2009)

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We demonstrate the frequency stabilization of a 1.5 μ m laser diode (LD) with a low-intensity noise and a narrow linewidth to a C 2 13 H 2 linear absorption line. The LD consists of an InP gain chip and an external Bragg reflector made of a PLC waveguide. By employing an external frequency modulator in a frequency stabilization circuit, an FM-eliminated optical output beam was obtained. The frequency stabilities reached as high as 2.3 × 10 11 for τ = 1 s and 9.1 × 10 12 for τ = 100 s . Furthermore, an RIN of less than 135 dB Hz and a linewidth of 4 kHz were simultaneously achieved.

© 2009 Optical Society of America

OCIS Codes
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(140.3425) Lasers and laser optics : Laser stabilization

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 1, 2009
Manuscript Accepted: June 10, 2009
Published: July 14, 2009

Keisuke Kasai and Masataka Nakazawa, "FM-eliminated C2H2 frequency-stabilized laser diode with an RIN of −135 dB/Hz and a linewidth of 4 kHz," Opt. Lett. 34, 2225-2227 (2009)

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