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Investigation of long wavelength green InGaN lasers on c ‐plane GaN up to 529 nm continuous wave operation
Author(s) -
Müller Jens,
Strauß Uwe,
Lermer Teresa,
Brüderl Georg,
Eichler Christoph,
Avramescu Adrian,
Lutgen Stephan
Publication year - 2011
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201000948
Subject(s) - materials science , laser , wavelength , optoelectronics , optics , continuous wave , facet (psychology) , physics , psychology , social psychology , personality , big five personality traits
We present analysis of the experimentally determined gain coefficients g 0 for green InGaN lasers with pulsed wavelengths from 495 to 526 nm. Variable facet coating as well as variable cavity length method are used to deduce the dependency of g 0 on wavelength. From the experimental data we found that better laser performance at shorter wavelengths correlates with higher material gain. Therefore, lasers at 504 nm reach wall plug efficiencies (WPE) up to 5.3% at 50 mW cw output power, while lasers with 525 and 529 nm show a WPE up to 3 and 2.3%, respectively. The WPE for longer wavelengths is limited due to thermal rollover in cw operation.