摘要
A compact low noise single frequency linearly polarized distributed Bragg reflector(DBR)fiber laser based on a 1.4-cm-long homemade Er^(3+)/Yb^(3+)-codoped phosphate single mode glass fiber has been demonstrated.An over 50 mW stable single frequency linearly polarized fiber laser was achieved.The measured slope efficiency is more than 21.6%,and the signal-to-noise ratio(SNR)is higher than 65 dB and the laser linewidth is less than 2.0 kHz.The laser RIN is measured to be less than-150 dB/Hz at the frequencies over 2.0 MHz,and the obtained linear polarization extinction ratio(LPER)is more than 30 dB.
基金
Supported by the National High-Technology Research and Development Program of China under Grant No 2011AA030203
the National Natural Science Foundation of China under Grant Nos 11174085,U0934001 and 60977060
the Guangdong Province and Hong Kong Invite Public Bidding Program(TC10BH07-1)
the Science and Technology Project of Guangdong(2009A090100044,2009B091300127,cgzhzd0903,2011B090400055)
the Fundamental Research Funds for the Central Universities(2012ZZ0002,2009ZG0005).
