Photonics Spectra Preview – July 2022

Right here is your first take a look at the editorial content material for the upcoming July subject of Photonics Spectra.


The worldwide marketplace for VCSELs continues to develop quickly, fueled largely by demand from 3D sensing functions embedded in cell phones and different client gadgets in addition to in automotive lidar and ADAS expertise. Contributing writer Hank Hogan examines how the applying calls for in these varied 3D sensing programs are shaping VCSEL efficiency properties, corresponding to beam high quality, wavelength, and output energy in addition to the price for each discrete and arrayed sources.

Key Applied sciences: VCSELs, edge-emitting diodes, lengthy/quick vary lidar, gesture recognition, 3D sensing, CMOS sensors

Cooled Imagers

After a lot anticipation, the James Webb Area Telescope is in place, ending its calibrations, and getting right down to the enterprise of probing the constructions and origins of our universe. Central to its mission is the Mid-Infrared Instrument, which includes three passively cooled detectors and a fourth that required an exquisitely engineered cooler to attenuate vibration, energy consumption, and thermal indicators from the detector’s electronics. Contributing editor James Schlett takes readers on a digital tour of the MIRI’s developmental journey and present performance with insights from the crew who designed it.

Key Applied sciences: Thermal administration and energetic cooling programs (particularly for imagers), MIR/SWIR sensors and cameras.

Fiber Sensors

Given their EMI immunity, intrinsic security, small measurement & weight, autoclave compatibility, and the potential to carry out multi-point and multi-parameter sensing remotely, optical fibers and fiber-based sensors are seeing elevated adoption for quite a lot of biomedical functions — starting from varied endoscopes to laser supply programs, to disposable blood gasoline sensors, to intra-aortic strain sensing probes. Alexis Mendez of MCH Engineering updates readers.

Key Applied sciences: Optical fibers, fiber sensors, and fiber parts, corresponding to Fabry-Perot interferometers, fiber Bragg gratings. Additionally, downstream implementations in OCT, confocal microscopy, photoacoustic imaging.

Simulation Software program

This text describes the worth and software of simulation software program to mannequin and clear up design challenges for terahertz spectroscopy parts.

Key Applied sciences: simulation software program, THz spectroscopy

Laser Diode Lighting

Laser diode-powered lighting has develop into well-established in functions demanding very high-intensity lighting, corresponding to architectural illumination, surgical lamps, spot and rescue lighting, and cinema projection. In the meantime, fabricators proceed to optimize their programs to decrease prices and make the expertise extra aggressive in nonetheless rising markets, corresponding to automotive headlamps. Ohio College’s Faiz Raiman updates readers on developments in phosphors, laser diode pumps, and thermal administration to scope out how this expertise will proceed to evolve.

Key Applied sciences: Diode laser-based gentle sources, lenses, mirrors, phosphors, warmth sinks, energy/management electronics.

Laser Security

An establishment’s capacity to precisely report and quantify laser-related accidents is dependent upon the way it defines “laser-related” and “accident.” Veteran laser security officer Ken Barat discusses the usual definitions already applied, and the way they may apply to readers’ organizations.

Key Applied sciences: Laser security interlocks, shutters, glasses

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