Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/25283
Title: | Investigation of Partially Coherent Interaction in Fiber Bragg Grating Stabilized 980-Nm Pump Modules |
Authors: | Wang, Jingcong |
Advisor: | Cassidy, D. T. |
Department: | Engineering Physics |
Keywords: | partially coherent interaction;fiber Bragg grating;980-nm pump module |
Publication Date: | Aug-2003 |
Abstract: | Partially coherent interaction of the feedback light with the field in the laser cavity is affirmed with the fiber Bragg grating (FBG) stabilized 980-nm pump lasers, on the contrast of normally accepted totally incoherent state of operation in the “coherence collapse” regime. Coherence parameter y was defined in this paper to identify the fraction of feedback light working coherently. It is shown that y can be determined by fitting the measured power-difference versus pumping-rate curve to the simulation results. Experiments confirm that coherence parameter y decreases while the distance between the FBG and the laser facet increases, and vice versa. While, if the device is kept operating in the “coherence-collapse” regime, y would not change with the amount of feedback. This work will be help to improve the performance of the high power FBG stabilized 980-nm pump laser. |
URI: | http://hdl.handle.net/11375/25283 |
Appears in Collections: | Digitized Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Wang_Jingcong_2003Aug_masters.pdf | 6.22 MB | Adobe PDF | View/Open |
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