Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1795302 | Journal of Crystal Growth | 2007 | 5 Pages |
Abstract
A set of room temperature low threshold current densities of a mid-infrared InP-based quantum cascade lasers (QCLs) have been demonstrated. Threshold current densities as low as 1.7 kA/cm2 for multi-mode Fabry-Perot QCLs at an emission wavelength of 7.6 μm and 0.9 kA/cm2 for single-mode distributed feedback QCLs at an emission wavelength of 7.7 μm have been achieved at 300 K. The results obtained are through the precision control of doping incorporation and concentration, the active region of the structure for suppressing the current leakage, and the low resistance material choice in the wave guide cladding and plasmon for improving heat dissipation.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
A.Z. Li, H. Li, G.Y. Xu, Y.G. Zhang, C. Lin, C. Zhu, L. Wei, Y.Y. Li,