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A semiconductor laser that uses quantum dots as the active laser medium in its light-emitting area is known as a quantum dot laser. In quantum dots, charge carriers are tightly confined, giving rise to an atomic-like electronic structure.
Such active media-based lasers have device performance that is more similar to gas lasers and do not have some of the drawbacks of standard semiconductor lasers based on bulk or quantum well active media.
Improvements in temperature insensitivity, linewidth enhancement factor, relative intensity noise, lasing threshold, and modulation bandwidth have.
By altering the dot size and composition, the quantum dot active region can be made to work at various wavelengths. Because of this, quantum dot lasers may now be made and operate at wavelengths that were previously unattainable using semiconductor laser technology.
Multicarrier Auger processes, which enhance the nonradiative rate following population inversion, present a problem in the development of quantum dot lasers.
Auger processes are innate to the material, although unlike bulk semiconductors, they can be partially manufactured in quantum dots at the expense of lowering the radiative rate.
The typically low conductivity of quantum dot films is another barrier to the specific objective of electrically pumped quantum dot lasing.
Commercial uses for quantum dot lasers are emerging in spectroscopy, tele-communications, display technology, and medicine. The use of temperature-insensitive quantum dot lasers in optical data transfers and networks is perfect.
The Global quantum dot laser market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Fujitsu Ltd. and Mitsui & Co., Ltd. announced they have launched a new optical device venture, QD Laser, Inc. QDL, using venture capital funding from both companies and Fujitsu’s quantum dot laser technology.
Quantum dot semiconductor crystallisation technology developed so far by Fujitsu, together with laser design and manufacturing capabilities, will be used by QDL to produce quantum dot lasers for the optical telecommunication light source industry for use in optical access and optical local area networks within buildings.
By using the greater functionality of its technology, the new company hopes to grow its market share and seize the lead in its industry.
