Epitaxially-stacked high efficiency laser diodes near 905 nm
Author(s)
Date
2022-12-01Source Title
IEEE Photonics Journal
Print ISSN
19430655
Publisher
Institute of Electrical and Electronics Engineers Inc.
Volume
14
Issue
6
Pages
1 - 6
Language
English
Type
ArticleItem Usage Stats
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Abstract
We report on studying tunnel junctions and an optical cavity structure for developing epitaxially-stacked high-efficiency 905 nm high-power laser diodes. The GaAs tunnel junctions were explored via simulations and experiments to realize a high peak current density of 7.7 × 104 A/cm2 and a low specific resistance of 1.5 × 10-5 Ωcm2 with a high n-doping concentration of 6 × 1019 cm-3. Employing a low-loss epitaxial structure design, single-, double-, and triple-cavity structure laser diodes demonstrated power scaling by epitaxial stacking. Triple-cavity laser diodes have a low optical loss (0.42 cm-1) and generate a peak power of 83 W with a short cavity length of 750 μm at a limited current of 30 A. © 2009-2012 IEEE.
Keywords
Epitaxial stackingHigh efficiency
Laser diode
Low optical loss
N-doping concentration
Power scaling
Specific resistance
Tunnel junction