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Proceedings Paper

Speckle reduction characterization of high power broad-area edge-emitting diodes lasers
Author(s): Kim Trinh Tran Thi; Zhaomin Tong; Muhammad Nadeem Akram
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Paper Abstract

We investigated the speckle contrast reduction characterization of high power broad-area edge-emitting red and blue laser. The speckle contrast is measured with different pulse driving conditions. It can be observed from the measurement that the speckle contrast reduces with the increasing of pulse duration and pulse amplitude. The highest speckle contrast reduction that can be achieved with the red and the blue lasers is 27.9% and 10.4% respectively. The reduction of speckle contrast is due to the shift of emission wavelength and the incoherence of the laser beam at high driving current.

Paper Details

Date Published: 11 September 2012
PDF: 6 pages
Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 84131N (11 September 2012); doi: 10.1117/12.978228
Show Author Affiliations
Kim Trinh Tran Thi, Vestfold Univ. College (Norway)
Zhaomin Tong, Vestfold Univ. College (Norway)
Muhammad Nadeem Akram, Vestfold Univ. College (Norway)


Published in SPIE Proceedings Vol. 8413:
Speckle 2012: V International Conference on Speckle Metrology
Ángel Fernandez Doval; Cristina Trillo, Editor(s)

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