Design of a ZnMnSe/ZnMgSe spin-polarized terahertz quantum cascade laser tunable by magnetic field
A design of a magnetic field tunable ZnMnSe/ZnMgSe terahertz quantum cascade laser is proposed. It relies on the spin-dependent potential induced by a magnetic field. The electron dynamics are calcula...
A design of a magnetic field tunable ZnMnSe/ZnMgSe terahertz quantum cascade laser is proposed. It relies on the spin-dependent potential induced by a magnetic field. The electron dynamics are calcula...
Gain narrowing and random lasing from dye-doped polymer-dispersed liquid crystals with nanoscale liquid crystal droplets
Dye-doped polymer-dispersed liquid crystals have been studied for random lasing. The dye-doped polymer-dispersed liquid crystal film was fabricated by photoinitiated polymerization with a collimated 5...
Dye-doped polymer-dispersed liquid crystals have been studied for random lasing. The dye-doped polymer-dispersed liquid crystal film was fabricated by photoinitiated polymerization with a collimated 5...
Thermal relaxation time and heat distribution in pulsed InGaAs quantum dot lasers
Appl. Phys. Lett. 89, 011110 (2006); doi:10.1063/1.2219721
Published 7 July 2006
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Using a charge coupled device-based thermoreflectance technique, we achieve a high-resolution (~700 nm) cross-sectional temperature profile of a semiconductor laser. This two-dimensional profile allows us to identify separate heat sources due to contact heating and nonradiative recombination in the active region. By adapting the technique to pulsed operation and varying the laser's duty cycle, we measure the thermal relaxation time constant. We also quantitatively determine the heat transfer from device-internal heat sources and demonstrate both the large effect of lateral heat spreading and the distinction between a laser's top surface temperature and its active region temperature.
©2006 American Institute of Physics
| History: | Received 18 December 2005; accepted 19 May 2006; published 7 July 2006 |
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http://link.aip.org/link/?APPLAB/89/011110/1 |
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