| Autor: |
Boris S. Ryvkin, Lauri Hallman, Mircea Guina, Eugene A. Avrutin, Antti T. Aho, Juha Kostamovaara, Jukka Viheriälä |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
2019 IEEE High Power Diode Lasers and Systems Conference (HPD). |
| DOI: |
10.1109/hpd48113.2019.8938671 |
| Popis: |
Design considerations for high pulsed power and brightness 1.5 $\mu$ m laser emitters for laser radar applications, based on comprehensive semi-analytical theory, are presented. A strongly asymmetric waveguide design with a bulk active layer positioned very near the p-emitter interface is chosen to minimize the current-induced losses at high power while maintaining a single, broad transverse mode. Moderate to high doping of the n-side of the Optical Confinement Layer and high p-doping of the p-cladding layer are used to reduce the residual current-induced losses and the electric resistance of the structure. For pulsed room-temperature operation, short laser resonators are found to be advantageous. First experimental results are presented. An as-cleaved sample with a stripe width of90 $\mu$ m and a resonator2 mm long exhibits an output power of about 18 W at a pumping current amplitude of 80 A, with 1 mm long resonators showing higher power output. Further improvements are predicted by structure optimization as well as increase in internal quantum efficiency and thermal performance. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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