High power room temperature 10148 nm Yb fiber amplifier and frequency quadrupling to 2537 nm for laser cooling of mercury atoms

• DOI: 10.1364/oe.21.030958
• Publication Date: 2013-12-09T18:15:52Z
• Authors: Jinmeng Hu; Lei Zhang; Hongli Liu; Kangkang Liu; Zhen Xu; Yan Feng
• Keywords: Laser linewidth; Amplified spontaneous emission

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 the laser wavelength and amplified spontaneous emission longer are managed by optimizing design. The has a linewidth of ~24 kHz without noticeable broadening after amplification. Using two resonant cavity frequency doublers, 1.03 507.4 75 mW 253.7 generated 4 laser. Both absorption saturated spectra (1)S(0) - (3)P(1) transition atomic mercury measured