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Optical Engineering

Semiconductor cylinder fiber laser
Author(s): Abhinay Sandupatla; James Flattery; Philipp Kornreich
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Paper 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.

Paper Details

Date Published: 24 December 2015
PDF: 5 pages
Opt. Eng. 54(12) 126113 doi: 10.1117/1.OE.54.12.126113
Published in: Optical Engineering Volume 54, Issue 12
Show Author Affiliations
Abhinay Sandupatla, Rensselaer Polytechnic Institute (United States)
James Flattery, Syracuse Univ. (United States)
Philipp Kornreich, Syracuse Univ. (United States)

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