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Proceedings Paper

High-resolution investigation of longitudinal modes of a GaN-based blue laser diode
Author(s): Watheq Al-Basheer; Abdulaziz Aljalal; Khaled Gasmi; Taofeek O. Adigun
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Paper Abstract

Typical emission spectra of GaN-based blue laser diodes are known to have irregular shapes. Hence, well-resolved study of their spectra may help in understanding the origin of their spectral shapes irregularity. In this paper, the spectra of a commercial GaN-based blue laser diode are studied as a function of injection current and temperature using a spectrometer with highresolution of 0.003-nm over the spectral region 440 – 450 nm. The obtained laser spectra are used to track the longitudinal modes evolution as a function of operating currents and temperatures as well as to precisely map single mode operation. In addition, yielded laser spectra will be utilized to evaluate few parameters related to the laser diode, such as mode spacing, optical gain, slope efficiency and threshold current at certain temperature.

Paper Details

Date Published: 16 May 2017
PDF: 8 pages
Proc. SPIE 10231, Optical Sensors 2017, 102312V (16 May 2017); doi: 10.1117/12.2264383
Show Author Affiliations
Watheq Al-Basheer, King Fahd Univ. of Petroleum & Minerals (Saudi Arabia)
Abdulaziz Aljalal, King Fahd Univ. of Petroleum & Minerals (Saudi Arabia)
Khaled Gasmi, King Fahd Univ. of Petroleum & Minerals (Saudi Arabia)
Taofeek O. Adigun, King Fahd Univ. of Petroleum & Minerals (Saudi Arabia)

Published in SPIE Proceedings Vol. 10231:
Optical Sensors 2017
Francesco Baldini; Jiri Homola; Robert A. Lieberman, Editor(s)

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