In recent years, sensitive, selective and accurate sensing techniques for ammonia gas
detection have been highly demanded since ammonia is both a commonly utilized gas in …

Quantum cascade (QC') lasers are reviewed. These are semiconductor injection lasers
based on intersubband transitions in a multiple-quantum-well (QW) heterostructure …

We review the most recent technological and application advances of quantum cascade
lasers, underlining the present milestones and future directions from the Mid-infrared to the …

Continuous wave operation of quantum cascade lasers is reported up to a temperature of
312 kelvin. The devices were fabricated as buried heterostructure lasers with high-reflection …

Semiconductor diode lasers were first developed in the mid-1960s and found immediate
application as much needed tunable sources for high-resolution laser spectroscopy …

Infrared (IR) spectroscopic imaging seemingly matured as a technology in the mid-2000s,
with commercially successful instrumentation and reports in numerous applications. Recent …

Laser Remote Sensing provides an up-to-date, comprehensive review on LIDAR, focusing
mainly on applications to current topics in atmospheric science. The scope of the book …

There is an increasing need in many chemical sensing applications ranging from industrial
process control to environmental science and medical diagnostics for fast, sensitive, and …

A theoretical model of wavelength modulation spectroscopy that uses a laser diode on a
Lorentzian absorption line is presented. This theory describes the general case of a current …

Experimental evidence that in quantum cascade lasers electron injection into the active
region is controlled by resonant tunneling between two-dimensional subbands is discussed …