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

Quantum cascade lasers (QCL) are the first room temperature semiconductor laser source
for the mid-IR spectral region, triggering substantial development for the advancement of …

Tunable diode laser absorption spectroscopy (TDLAS) has become a proven method of
rapid gas diagnostics. In the present review an overview of the state of the art of TDL-based …

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

Quantum cascade (QC) lasers are virtually ideal mid-infrared sources for trace gas
monitoring. They can be fabricated to operate at any of a very wide range of wavelengths …

Sensors | Free Full-Text | Photoacoustic Techniques for Trace Gas Sensing Based on
Semiconductor Laser Sources Next Article in Journal Photoreactions and Structural …

In this paper we review the progress of the development of mid-infrared quantum cascade
lasers (QCLs) operated in an external cavity configuration. We concentrate on QCLs based …

Despite providing the opportunity for directly sensing molecular constituents with inherent
fingerprint specificity in the 2.5–20 μm spectral regime, mid-infrared optical sensing …

An external cavity (EC) quantum cascade laser (QCL) configuration with the
thermoelectrically cooled gain medium fabricated using a bound-to-continuum design and …

Optical chemical imaging seeks to nondestructively acquire spatially resolved chemical
information without the use of labels or probes. The combination of vibrational mid-infrared …