Open Access15 W high OSNR kHz-linewidth linearly-polarized all-fiber single-frequency MOPA at 16 μm
Author(s) -
Changsheng Yang,
Xianchao Guan,
Qilai Zhao,
Wei Lin,
Can Li,
Jiulin Gan,
Qi Qian,
Zhouming Feng,
Zhongmin Yang
Publication year - 2018
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.26.012863
Subject(s) - laser linewidth , materials science , optics , fiber laser , extinction ratio , laser , amplified spontaneous emission , optical amplifier , amplifier , optoelectronics , physics , wavelength , cmos
A 1603 nm high optical signal-to-noise ratio (OSNR) kHz-linewidth linearly-polarized all-fiber single-frequency master-oscillator power amplifier (MOPA) is demonstrated. To suppress the amplified spontaneous emission from Yb 3+ /Er 3+ ions with the customized filters and optimize the length of the double cladding active fiber, an over 15 W stable single-longitudinal-mode laser is achieved with an OSNR of >70 dB. A measured laser linewidth of 4.5 kHz and a polarization-extinction ratio of >23 dB are obtained at the full output power. This L-band high-power single-frequency MOPA is promising for high-resolution molecular spectroscopy and pumping of Tm 3+ -doped or Tm 3+ /Ho 3+ co-doped laser.