Open Access295 mW output, frequency-stabilized erbium silica fiber laser with a linewidth of 5 kHz and a RIN of −120 dB/Hz
Author(s) -
Keisuke Kasai,
Masato Yoshida,
Makoto Nakazawa
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.002737
Subject(s) - laser linewidth , materials science , relative intensity noise , optics , fiber laser , oscillation (cell signaling) , erbium , laser , noise (video) , absorption (acoustics) , semiconductor laser theory , physics , chemistry , biochemistry , composite material , artificial intelligence , computer science , image (mathematics)
We demonstrate the frequency stabilization of a high output power, erbium silica fiber laser by utilizing a (13)C2H2 (acetylene) absorption line at 1538.8 nm and a H(13)C(14)N (hydrogen cyanide) absorption line at 1549.73 nm. We introduced a novel short ring cavity configuration and pump power feedback control to suppress the intensity noise of the laser output, which is caused by the relaxation oscillation of erbium ions. As a result, we succeeded in simultaneously obtaining a stable single-frequency oscillation with an output power of over 290 mW, a linewidth of 5 kHz, and a low relative intensity noise (RIN) of -120 dB/Hz. The frequency stabilities reached 2.8 × 10(-11) and 6.9 × 10(-11) for an integration time of 1 s with a (13)C2H2 and a H(13)C(14)N absorption line, respectively.