Type-II interband cascade lasers in the 4.3-4.7-/spl mu/m wavelength region |
| |
| Authors: | RQ Yang CJ Hill Baohua Yang CM Wong |
| |
| Affiliation: | Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA; |
| |
| Abstract: | Operation of type-II interband cascade lasers in the 4.3-4.7-/spl mu/m wavelength region has been demonstrated at temperatures up to 240 K in pulsed mode. These lasers fabricated with 150-/spl mu/m-wide mesa stripes operated in continuous-wave (CW) mode up to a maximum temperature of 110 K, with an output power exceeding 30 mW/f and a threshold current density of about 41 A/cm/sup 2/ at 90 K. The maximum CW operation temperature of 110 K is largely limited by the high specific thermal resistance of the 150-/spl mu/m-wide broad area lasers. A 20-/spl mu/m-wide mesa stripe laser was able to operate in CW mode at higher temperatures up to 125 K as a result of the reduced specific thermal resistance of a smaller device. |
| |
| Keywords: | |
|
|
