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Newer, so called "Comb lasers" based on quantum dot lasers have been found to be capable of operating at wavelengths of ≥ 80 nm and be unaffected by temperatures between -20 °C and 90 °C, and allow higher accuracy with reduced fluctuations and less relative intensity noise. [3] [4] In development are colloidal quantum dot lasers, which ...
Quantum Dots: Montreal, QC, Canada NEC Corporation [63] April 29, 1999 [64] Communication Quantum Dots: University of Tokyo: Tokyo, Japan Next Generation Quantum [65] 2019: Computing//Networking Optical quantum interconnects for quantum computing clusters: City University of New York: New York, NY, USA Nokia Bell Labs [66] [67] Computing ...
In an external cavity (EC) quantum cascade laser, the quantum cascade device serves as the laser gain medium. One, or both, of the waveguide facets has an anti-reflection coating that defeats the optical cavity action of the cleaved facets. Mirrors are then arranged in a configuration external to the QC device to create the optical cavity.
Quantum dots have properties intermediate between bulk semiconductors and discrete atoms or molecules. Their optoelectronic properties change as a function of both size and shape. [6] [7] Larger QDs of 5–6 nm diameter emit longer wavelengths, with colors such as orange, or red. Smaller QDs (2–3 nm) emit shorter wavelengths, yielding colors ...
Quantum dot laser: wide range. Medicine (laser scalpel, optical coherence tomography), display technologies (projection, laser TV), spectroscopy and telecommunications. Quantum well laser: 0.4-20 μm, depending on active region material. Telecommunications: Hybrid silicon laser: Mid-infrared: Low cost silicon integrated optical communications
Panasonic Corporation (former) Pioneer; Planar Systems (former) Powertip Technology Corporation [10] Samsung Display (former, formerly / S-LCD, a then-joint venture between Samsung Electronics and Sony which Samsung Electronics subsequently bought out Sony's share) [11] [12] / Sakai display products (joint venture between Foxconn and Sharp ...
Quantum computing: Experiments, [37] commercialization, [38] early diffusion Much faster computing for some kinds of problems, chemical modeling, new materials with programmed properties, Hypothetical of high-temperature superconductivity and superfluidity: Quantum cryptography: Commercialization [39] Secure communications Quantum radar: Prototypes
A widespread practical application is using quantum dot enhancement film (QDEF) layer to improve the LED backlighting in LCD TVs.Light from a blue LED backlight is converted by QDs to relatively pure red and green, so that this combination of blue, green and red light incurs less blue-green crosstalk and light absorption in the color filters after the LCD screen, thereby increasing useful ...