Continuous-wave interband cascade lasers operating above room temperature at λ = 4.7-5.6 µm.
Opt Express
; 20(3): 3235-40, 2012 Jan 30.
Article
en En
| MEDLINE
| ID: mdl-22330561
ABSTRACT
We have substantially improved the performance of interband cascade lasers emitting at λ = 4.7 and 5.6 µm, by applying the recently-pioneered approach of heavily doping the injector regions to rebalance the electron and hole concentrations in the active quantum wells. Ridges of ≈10 µm width, 4 mm length, and high-reflectivity back facets achieve maximum continuous wave operating temperatures of 60°C and 48°C, respectively. The threshold power density of ≈1 kW/cm2 at T = 25°C is over an order of magnitude lower than for state-of-the-art quantum cascade lasers emitting in this spectral range.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Rayos Láser
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos