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Multi-wavelength thulium-doped fiber laser operating at slope efficiency of 16.57% in linear cavity configuration

H. SHAMSUDIN1, A. A. LATIFF1,2, N. N. RAZAK1,2, H. AHMAD1, S. W. HARUN1,3,*

Affiliation

  1. Photonics Research Centre, Department of Physics, University of Malaya, 50603 Kuala Lumpur, Malaysia
  2. Faculty of Electrical and Computer Engineering, Malaysia Technical University of Melaka (UTeM), 25566 Melaka, Malaysia
  3. Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia

Abstract

A multi-wavelength thulium doped fiber laser (TDFL) with a slope efficiency of 16.57 % is demonstrated using a linear cavity consisting of a broadband mirror and a flat-cleaved fiber end in conjunction with 1552 nm pumping. The TDFL produces eleven lines within a wavelength range from 1895 to 1907 nm with a constant spacing of 1.2 nm and signal to noise ratio of more than 27 dB. The multi-wavelength TDFL is capable of generating pulses with a repetition rate of 11.62 MHz and average output power of 93 mW at the maximum pump power of 1100 mW. The proposed multi-wavelength TDFL is suitable for a multitude of real-world applications such as range-finding, medicine and spectroscopy due to its ability to operate in the eye-safe region of 2 micron..

Keywords

Multi-wavelength, Thulium-doped fiber, Linear cavity, Nonlinear polarization rotation.

Citation

H. SHAMSUDIN, A. A. LATIFF, N. N. RAZAK, H. AHMAD, S. W. HARUN, Multi-wavelength thulium-doped fiber laser operating at slope efficiency of 16.57% in linear cavity configuration, Optoelectronics and Advanced Materials - Rapid Communications, 10, 3-4, March-April 2016, pp.129-132 (2016).

Submitted at: Jan. 28, 2016

Accepted at: April 5, 2016