Abstract
High-temperature pulsed operation of strain-compensated quantum cascade lasers with high-reflection coating on cleaved laser facets was demonstrated. A solid-source molecular beam epitaxy (MBE) system was used for the growth of quantum cascade lasers on a low n-doped InP substrate. The HR coatings were designed for an emission emission wavelength of 5.6μm to account for the increase in emission wavelength at elevated temperatures. The demonstration revealed an increase in the operation temperature from 440 K to 470 K and a subsequent decrease in threshold current density from 8.1 to 6.5 kA/cm2.
Original language | English |
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Pages (from-to) | 1341-1342 |
Number of pages | 2 |
Journal | Electronics Letters |
Volume | 37 |
Issue number | 22 |
DOIs | |
State | Published - 25 Oct 2001 |