Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Distributed-feedback GaInAs/AIAsSb quantum-cascade lasers operating at 300 K

Distributed-feedback GaInAs/AlAsSb Quantenkaskadenlaserbetrieb bis 300 K
: Yang, Q.K.; Bronner, W.; Manz, C.; Raynor, B.; Menner, H.; Mann, C.; Köhler, K.; Wagner, J.


Applied Physics Letters 88 (2006), No.20, Art. 201109, 3 pp.
ISSN: 0003-6951
ISSN: 1077-3118
Journal Article
Fraunhofer IAF ()
single-mode; distributed feedback; short-wavelength; room temperature; quantum cascade laser; einmodig; kurzwellig; Raumtemperatur; Quantenkaskadenlaser

Short-wavelength (lambda about 4 µm) single-mode distributed-feedback GaInAs/AlAsSb quantum-cascade lasers operating in pulsed mode up to room temperature (300 K) have been demonstrated by etching an index-coupled first-order distributed-feedback grating into the upper GaInAs separate confinement layer. The temperature-dependent wavelength shift of the distributed-feedback lasers is -0.14 cm-1/K (0.238 nm/K). For devices with a size of 18 µmx2.9 mm mounted epilayer-up with as-cleaved facets, a maximum peak power per facet of 840 mW has been achieved at 77 K and 4 mW at 300 K. The characteristic temperature T(ind 0) of the threshold current density is 105 K.