Lasers, Fiber Optics, and Communications

Semiconductor cylinder fiber laser

[+] Author Affiliations
Abhinay Sandupatla

Rensselaer Polytechnic Institute, Department of Electrical Computer, and Systems Engineering, 110, 8th Street, Troy, New York 12180, United States

James Flattery, Philipp Kornreich

Syracuse University, EECS Department, Syracuse, New York 13244, United States

Opt. Eng. 54(12), 126113 (Dec 24, 2015). doi:10.1117/1.OE.54.12.126113
History: Received May 22, 2015; Accepted November 23, 2015
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Abstract.  We fabricated a fiber laser that uses a thin semiconductor layer surrounding the glass core as the gain medium. This is a completely new type of laser. The In2Te3 semiconductor layer is about 15-nm thick. The fiber laser has a core diameter of 14.2  μm, an outside diameter of 126  μm, and it is 25-mm long. The laser mirrors consist of a thick vacuum-deposited aluminum layer at one end and a thin semitransparent aluminum layer deposited at the other end of the fiber. The laser is pumped from the side with either light from a halogen tungsten incandescent lamp or a blue light emitting diode flash light. Both the In2Te3 gain medium and the aluminum mirrors have a wide bandwidth. Therefore, the output spectrum consists of a pedestal from a wavelength of about 454 to 623 nm with several peaks. There is a main peak at 545 nm. The main peak has an amplitude of 16.5 dB above the noise level of 73  dB.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Abhinay Sandupatla ; James Flattery and Philipp Kornreich
"Semiconductor cylinder fiber laser", Opt. Eng. 54(12), 126113 (Dec 24, 2015). ; http://dx.doi.org/10.1117/1.OE.54.12.126113


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