Widely tunable, monolithically integrated mid-infrared semiconductor laser operates at room temperature.MANIJEH RAZEGHI, WENJIA ZHOU, DONGHAI WU, RYAN MCCLINTOCK AND STEVEN SLIVKEN, NORTHWESTERN UNIVERSITYThe atoms in a molecule can bend, stretch and rotate with respect to one another, and these excitations are largely optically active. Most molecules, from simple to moderately complex, have a characteristic absorption spectrum in the 3- to 14-µm wavelength range that can be uniquely identified and quantified in real time. Infrared spectroscopy has been used to study these absorption features and develop different molecular “fingerprints.” The benefits of this optical technique, as opposed to chemical sensors or chromatography, are that the detection mechanism requires...Read full articleRelated content from Photonics MediaARTICLESDemand for MIR Photonics Rises on New Gas Analysis ApplicationsAs MIR LEDs have become more powerful and efficient sources, an emerging generation of compact MIR detectors is offering effective performance at room temperature. 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The air-cooled device delivers 10 W of power at a maximum pulse energy of 20 μJ,...Photonics.com 4/25/2022PHOTONICS HANDBOOK ARTICLESQCL Primer: History, Characteristics, Applications: The versatility of quantum cascade lasers make them a good choice for the mid-infrared region.Since its first successful operation in 1960 at Hughes Research Labs, the laser technology has been at the center of innovation and research. Semiconductor lasers first made their appearance in 1962...Photonics HandbookLasers: Understanding the Basics: Although lasers range from quantum-dot to football-field size and utilize materials from free electrons to solids, the underlying operating principles are always the same. This article provides the basic information about how and why lasers work.Over 60 years have passed since the first demonstration of a laser in 1960. 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From the first submarine...Photonics HandbookWHITEPAPERSLight Changes Matter – with Optics, Lasers and SensorsJenoptik is a global OEM supplier of solutions and products based on photonics technologies with more than 25 years experience in the fields of optics, laser technology, digital imaging,...Photonics.com 12/2/2020Power is Nothing Without "Pulse to Pulse" Laser ControlWe performed a measurement on different Fast and Ultrafast laser sources with our Blink HS, a new generation of High Speed Laser Energy Sensor. 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Photodetectors for the IR, UV, THz, and visible Light...Photonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...Photonics Buyers' Guide