Published Research Papers Featuring Block's Technology
Block's spectrometer products and widely tunable QCL sources have been featured in numerous research papers. Please click here for a current list of papers.
Block Engineering Technology
Quantum Cascade Lasers (QCL) Technology
Quantum Cascade Lasers are semiconductor devices, which operate differently from conventional semiconductor lasers. For information on QCL technology used by Block, please click here.
Fourier transform infrared spectroscopy (FTIR) Technology
FTIR Spectroscopy is a sensor technology based on the Michelson interferometer. To read a description of the technology used in a basic Michelson Interferometer as well as passive FTIR spectroscopy, please click here.
Microelectromechanical systems (MEMS) Technology
Block is using sophisticated MEMS technologies to develop miniaturized FTIRs on a chip. For information on our MEMS technology, please click here.
Quantum Cascade Laser Instruments
LaserSense™ is a compact Quantum Cascade Laser-based gas detection system based on infrared absorption spectroscopy.
LaserWarn™ is an open-path chemical detection system that identifies chemical leaks and threats at parts-per-billions sensitivity levels from hundreds of meters away. The system detects Chemical Warfare Agents (CWAs) and Toxic Industrial Chemicals (TICs).
LaserTune™ is a tunable mid-IR source. The fully integrated LaserTune system has the widest tuning range of any mid-IR QCL source available.
MCT IR Detector Module™ is a cooled detector element and preamplifier package optimized for acquiring spectral data with the LaserTune source. The module is also available as a stand-alone detector.
Standoff Passive FTIRSpectroscopy Products
PORTHOS™: Portable Hazard Observation System offering lightweight (~15 lbs), battery (~6 hrs) operation with built-in detection software algorithm and automatic calibration with no user intervention. Block currently offers two models: PORTHOS-500 (0.5° field of view) and PORTHOS-1500 (1.5° field of view)
Detection of Chemical Threats: Block has developed an open-path chemical detection system that detects chemical threats — including Toxic Industrial Chemicals and Materials (TICs/TIMs) and Chemical Warfare Agents (CWAs) — in parts-per-billion (ppb) ranges from standoff distances of hundreds of meters. The system registers warnings in seconds, allowing for rapid response to threats.
Gas Leak Detection and Fenceline/Perimeter Monitoring: Block Engineering's LaserWarn detects target chemicals, including Volatile Organic Compounds (VOCs), across perimeters as large as 500 meters. The eye-safe lasers allow for mounting in areas where workers or other people will be present. The system continually scans for gases that cross the laser beam path, and triggers alarms when concentration thresholds are detected.