Open AccessHigh power room temperature 10148 nm Yb fiber amplifier and frequency quadrupling to 2537 nm for laser cooling of mercury atoms
Author(s) -
Jinmeng Hu,
Lei Zhang,
Hongli Liu,
Kangkang Liu,
Zuyan Xu,
Yang Feng
Publication year - 2013
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.21.030958
Subject(s) - materials science , laser linewidth , fiber laser , laser , optics , amplifier , laser power scaling , wavelength , optoelectronics , amplified spontaneous emission , physics , cmos
An 8 W continuous wave linearly-polarized single-frequency 1014.8 nm fiber amplifier working at room temperature is developed with commercial double-clad single-mode Yb-doped silica fiber. Re-absorption at the laser wavelength and amplified spontaneous emission at longer wavelength are managed by optimizing the amplifier design. The laser has a linewidth of ~24 kHz without noticeable broadening after amplification. Using two resonant cavity frequency doublers, 1.03 W laser at 507.4 nm and 75 mW laser at 253.7 nm are generated with 4 W 1014.8 nm laser. Both absorption and saturated absorption spectra of the (1)S(0) - (3)P(1) transition of atomic mercury are measured with the 253.7 nm laser.