Theoretical analysis of spectral gain in a terahertz quantum-cascade laser: Prospects for gain at 1 THz
In a recent letter [B. S. Williams et al. Appl. Phys. Lett. 82, 1015 (2003)], Williams et al. reported the development of a terahertz quantum-cascade laser operating at 3.4 THz or 14.2 meV. We have ca...
In a recent letter [B. S. Williams et al. Appl. Phys. Lett. 82, 1015 (2003)], Williams et al. reported the development of a terahertz quantum-cascade laser operating at 3.4 THz or 14.2 meV. We have ca...
High-power continuous-wave operation of a 6 µm quantum-cascade laser at room temperature
Appl. Phys. Lett. 83, 2503 (2003); doi:10.1063/1.1613354
Issue Date: 29 September 2003
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We report continuous-wave (cw) operation of quantum-cascade lasers (
= 6 µm) using a thick electroplated Au top contact layer and epilayer-up bonding on a copper heat sink up to a temperature of 308 K (35 °C). The high cw optical output powers of 132 mW at 293 K and 21 mW at 308 K are achieved with threshold current densities of 2.29 and 2.91 kA/cm2, respectively, for a high-reflectivity-coated 15 µm wide and 2 mm long laser. ©2003 American Institute of Physics.
= 6 µm) using a thick electroplated Au top contact layer and epilayer-up bonding on a copper heat sink up to a temperature of 308 K (35 °C). The high cw optical output powers of 132 mW at 293 K and 21 mW at 308 K are achieved with threshold current densities of 2.29 and 2.91 kA/cm2, respectively, for a high-reflectivity-coated 15 µm wide and 2 mm long laser. ©2003 American Institute of Physics.
| History: | Received 2 June 2003; accepted 30 July 2003 |
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http://link.aip.org/link/?APPLAB/83/2503/1 |
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