Mid-infrared quantum cascade lasers are semiconductor injection lasers whose active core
implements a multiple-quantum-well structure. Relying on a designed staircase of …

Recent years have shown the importance of tunable semiconductor lasers in optical
sensing. We describe the status quo concerning DFB laser diodes between 760 nm and …

We demonstrate high power continuous-wave room-temperature operation surface-grating
distributed feedback quantum cascade lasers at 4.8 μ m⁠. High power single mode …

Calcium copper titanate ceramics were fabricated by cold isostatic pressing at various
calcination and sintering conditions. Depending on fabrication condition, three electrical …

Heterogeneous integration enables the construction of silicon (Si) photonic systems, which
are fully integrated with a range of passive and active elements including lasers and …

High-power quantum cascade lasers (QCLs) working in continuous wave (cw) above 400 K
are presented. The material was grown by low-pressure metal organic vapor-phase epitaxy …

Detection of molecules with wide unresolved rotationa-lvibrational absorption bands is
demonstrated by using Quartz Enhanced Photoacoustic Spectroscopy and an amplitude …

We measured the facet temperature profiles of Ga In As∕ Al In As quantum cascade lasers
(QCLs) operating in continuous wave mode by means of microprobe photoluminescence …

An overview of the three competing mid-infrared semiconductor laser approaches, being
diode, quantum cascade and interband cascade laser designs, is given. Limiting factors as …

Single-mode lasers operating at lambda ap 9 mum in continuous wave up to 423 K
(150degC) were achieved by the combination of strong distributed-feedback coupling, a …