FM-eliminated C2H2 frequency-stabilized laser diode with an RIN of -135 dB/Hz and a linewidth of 4 kHz

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Abstract

We demonstrate the frequency stabilization of a 1.5 μm laser diode (LD) with a low-intensity noise and a narrow linewidth to a 13C 2H2 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.

Original languageEnglish
Pages (from-to)2225-2227
Number of pages3
JournalOptics Letters
Volume34
Issue number14
DOIs
Publication statusPublished - 2009 Jul 15

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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