Category Photonics

Graphene infrared (IR) photodetectors enable ultrafast and room temperature IR cameras ultrasensitive for entire spectrum, and 3D cameras

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Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. There is a wide variety of photodetectors that may be classified by mechanism of detection, such as photoelectric or photochemical effects, or by various performance metrics, such as…...

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Ground and Space optical telescopes critical for Space Situational Awareness

optical telescopesSSA

There has been an exponential growth of space objects, including orbital debris that has increased the in-orbit collision risk. NASA estimates there are 21,000 objects orbiting Earth that are larger than 10 cm, 500,000 between 1 and 10 cm, and…...

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Wearable Photonic devices making personalized medicine and health tracking a reality.

wearablephotonics

Currently, old-style personal Medicare techniques rely mostly on traditional methods, such as cumbersome tools and complicated processes, which can be time-consuming and inconvenient in some circumstances. Furthermore, such old methods need the use of heavy equipment, blood draws, and traditional…...

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Optical Networks Vulnerabilities and Security threats

Optical Networks Vulnerabilities

Optical networks are vulnerable to several types of security breaches or attacks, typically aimed at disrupting the service or gaining unauthorized access to carried data, i.e., eavesdropping. Depending on the aim of the attack, security breaches can induce financial losses to…...

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Military applications of Ultravoilet spectrum becoming feasible with Technology breakthroughs

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The electromagnetic spectrum is a series of frequencies ranging from radio waves to microwaves, visible light, X-rays, and gamma rays. As the wavelength of the electromagnetic radiation shortens, the waves have a higher frequency—how quickly electromagnetic waves follow each other—and…...

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Quantum Imaging technique can have military applications, US and China racing to deploy quantum ghost imaging in satellites for stealth plane tracking

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Today, we are witnessing the second quantum revolution, where quantum states, which can exhibit superposition and entanglement, are harnessed for quantum technological applications. Quantum Sensing exploits the high sensitivity of quantum systems to external disturbances to develop highly sensitive sensors.  …...

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Inverse design in photonics

Inverse design in photonics

The design of digital circuits is currently dominated by hardware description languages such as Verilog and VHDL. This automation of circuit design has enabled the development of modern computer processors with billions of transistors.   Integrated photonic devices, on the…...

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Dynamic metasurfaces including Liquid crystal metasurfaces allow tuning of metasurface functionality also after fabrication.

Metamaterials are artificially structured materials designed to control and manipulate physical phenomena such as light and other electromagnetic waves, sound waves and seismic waves in unconventional ways, resulting in exotic behavior that’s not found in nature. This class of micro-…...

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Vertical-cavity surface-emitting lasers (VCSEL& VECSEL) arrays enable data communication to lidar and military infrared imaging

VCSEL

The illumination source employs different technologies, ranging from lamps to semiconductor light emitting diodes (LEDs) or lasers. The lamp, while straight-forward, is broad-band, bulky, and generally inefficient.   The main wavelengths of interest for illumination are around 808nm, 976m, 1064nm,…...

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