In:
Micromachines, MDPI AG, Vol. 11, No. 12 ( 2020-11-25), p. 1036-
Abstract:
Wavelength-tunable thulium-doped fiber laser is demonstrated employing a digital micromirror device (DMD) in combination with a fixed grating. The diffraction property of four typical models of DMDs and its steering efficiency for the laser system are analyzed based on two-dimensional grating theory. By spatially modulating reflective patterns on a DMD, the stable, fast, and flexible tuning of lasing wavelength from 1930 nm to 2000 nm is achieved with wavelength tuning accuracy of 0.1 nm. The side-mode suppression ratio is larger than 50 dB around the 2 μm band with 3 dB linewidth less than 0.05 nm. The wavelength drift and power fluctuation are lower than 0.05 nm and 0.1 dB within 1 h at the room temperature, respectively.
Type of Medium:
Online Resource
ISSN:
2072-666X
Language:
English
Publisher:
MDPI AG
Publication Date:
2020
detail.hit.zdb_id:
2620864-7
