Demonstration of High-Power and Stable Single-Mode in a Quantum Cascade Laser Using Buried Sampled Grating.
Nanoscale Res Lett
; 14(1): 123, 2019 Apr 03.
Article
en En
| MEDLINE
| ID: mdl-30945027
ABSTRACT
High-power, low-threshold stable single-mode operation buried distributed feedback quantum cascade laser by incorporating sampled grating emitting at λ ~ 4.87 µm is demonstrated. The high continuous wave (CW) output power of 948 mW and 649 mW for a 6-mm and 4-mm cavity length is obtained at 20 °C, respectively, which benefits from the optimized optical field distribution of sampled grating. The single-mode yields of the devices are obviously enhanced by controlling cleaved positions of the two end facets precisely. As a result, stable single-mode emission and mode tuning linearly without any mode hopping of devices are obtained under the different heat sink temperatures or high injection currents.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Nanoscale Res Lett
Año:
2019
Tipo del documento:
Article
País de afiliación:
China