Chemistry GaN Lasers and Their Technological Challenges Report

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summary report on GaN lasers including the most prevalent technological challenges.

 

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Running Head: GaN LASERS

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GaN LASERS
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GaN LASERS

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GaN Lasers and Their Technological Challenges
Abstract

The world has witnessed an increased use of Gallium Nitride in fields. The possibility of
up to 15 G bit/s data transfer rate and production of upto450nm of wavelength has eased both
communication and lighting. This paper stipulates some of the properties, commercial uses and
the technological challenges associated with the development of GaN-based lasers. In addition,
the paper also touches on the structure of GaN and why it is a preferred choice in the
development of lasers.
Introduction
The current technological advancement in various fields has seen a rise in creativity
and a reduction of human effort while promoting accuracy. This has been done through the
development of electrical, radiation, magnetic and mechanical power equipment for optimum
energy transformation processes. One of such equipment is the laser. A laser is a device that creates
light from coherent protons of the same wavelength. Its difference from the normal light is that it
is directional. Normal light producers generate a light beam that can diffuse since its wavelength
is incoherent. Laser light can be focused for long distances since it’s coherent. There are a number
of lasers available in the market made from different components. One of them is the GaN laser.
Laser Properties
GaN lasers are blue semiconductor lasers made of gallium nitride. The wavelengths
produced by these lasers range from 360 to 480 nanometers. The human eye perceives them as
either violet or blue in color and is considered to be arguably the best semiconductor lasers in the
market. The emission of the violet or blue radiation takes place when an electric current is pumped
into the GaN crystals which form the p-n junction.
GaN has a 3.4 eV band gap which is wide than other components making it the best
option for the devices operating within UV or blue field in the magnetic spectrum. The heat
withstanding capability of GaN is up to 900 degrees Celsius due to its high chemical stability
making it the best in high voltage and caustic conditions. GaN appears in a wurtzite crystal
structure. Some of the tech...


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