Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7127956 | Optics & Laser Technology | 2018 | 7 Pages |
Abstract
A tunable, Q-switched depressed-cladding erbium-doped fiber (DC-EDF) laser employing a molybdenum tungsten disulfide (MoWS2) thin film as a saturable absorber (SA) is reported. The output of the laser can be controlled by adjusting the spooling diameter of the gain medium, with continuous wave operation obtained from 1466â¯nm to 1502â¯nm and 1473â¯nm to 1525â¯nm for DC-EDF spooling diameters of 5.5â¯cm and 6.5â¯cm respectively. The Q-switched output, obtained by incorporating an MoWS2 based SA into the cavity shortens the tuning range to between 1476.0â¯nm and 1496.0â¯nm as well as 1486.0 to 1496.0â¯nm for the same spooling diameters. The outputs have repetition rates ranging from 21.7â¯kHz to 44.6â¯kHz and a minimum pulse width and maximum pulse energy of 2.4â¯Âµs and 11.0â¯nJ, for the DC-EDF with a spooling diameter of 5.5â¯cm. The DC EDF with a spooling diameter of 6.5â¯cm is able to generate pulses with a repetition rate of between 32.2â¯kHz and 40.9â¯kHz with a minimum pulse width and maximum pulse energy of 2.8â¯Âµs and 10.1â¯nJ.
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Authors
H. Ahmad, S.A. Reduan,