and recieve his first patent for the laser. .
The first gas laser helium neon was invented by Ali Javan. Some further laser .
developments were using chemical reactions instead of electric currents to .
generate a lasing effect, using rapid cooling through expansion to cause excitation, using .
dyes as a medium to tune the laser across a range of wavelengths, and using p-n junctions .
in semiconductors or a free electron medium to create lasing effects. .
When world powers found out about the idea of lasers for weapons the just throw .
money at it . They developed laser beam weapons and high powered lasers. Vietnam led .
to the development of laser radar, targeting, and reconnaissance systems. Environmental .
and later energy concerns the OPEC oil crisis led to increased funding for laser research .
investigating things such as air-pollution monitoring and energy applications. .
Communications became one of the biggest arenas in which lasers were thought .
to have application. Increasing telephone use, electronic transmission, relaying of .
television signals, and the need for communication in space all contributed to the .
emphasis placed on laser technology toward communications. The initial attraction to .
lasers for communications came from the fact that the amount of coherent information .
that an electromagnetic wave can carry if proportional to its frequency.
One of the most helpful ways lasers are used to is laser eye surgery. One of the .
most common procedures use is called LASIK. LASIK stands for Laser Assisted In Situ .
Keratomileusis. This literally means, to shape the cornea within, using laser. For example Nearsightedness or myopia occurs when light rays entering the eye are focused in .
front of the retina instead of directly on it. Myopia is usually a result of the curvature .
of the cornea being too strong or the length of the eyeball being too long.
During the LASIK procedure, microscopic layers in the cornea are removed, resulting in a .
There are many different types of lasers: solid-state, gas, semiconductor, liquid, and free electron lasers. ... These lasers can do precision welding. ... Lasers can easily vaporize surface tumors. ... The laser would send a concentrated beam of laser light at a missile and destroy the missile in the air. ... The military uses laser sights on their guns. ...
Theodore Maiman invented the ruby laser thought to be the first successful optical or light laser. ... They developed laser beam weapons and high powered lasers. ... One of the most helpful ways lasers are used to is laser eye surgery. ... It is hard to believe that lasers have come so far. ... It is hard to say were lasers will go next but I am sure that lasers are around to stay. ...
There are many different kinds of lasers that have a large array of powers starting from the most powerful; an atomic laser to the weakest; an infrared laser. ... An infrared laser emits about two volts per second. The way these two lasers work are remotely relative, but I am going to explain the basic way most lasers work. ... The argon gas is what gives a laser its red color in a laser pointer. ... There are many ways to change the strength of a laser but what I have explained above are the basics to a laser and the way it works. ...
Introduction to lasers and different types of lasers Light is a form of energy that can be released by an atom. ... The difference between gas and ruby lasers is that most gas lasers operate continuously. ... Also laser range finders for aircrafts use laser distance meters Laser used for automatic landing systems for aircrafts. ... Laser surface treatments such as laser cladding, surface alloying & cleaning. ... Laser welding, including conduction-limited laser welding and sensor integration. ...
In the recent years medical technology has offered a great alternative for people like him, laser surgery. ... From all of his sailing investments, he considers laser eye surgery one of the best. ... Moshirfar talks about the risks of laser eye surgery for patients with high myopia and flat corneas. ... His information can help this group of patients decide between laser surgery and contact lenses. ... It should cover exams and medicines as well as the surgeon's fee and the laser royalty. ...
Laser Printers Vs Inkjet Printers Subject: Laser Printers Vs Inkjet Printer Introductory Summary This report explains the advantages of the Laser printer over the Inkjet printer. ... Laser printers last longer and cost less over extend use. ... Advantages of Laser Printers over Inkjet Printers Laser printers have advantages over the inkjet printers. ... Most Laser printers come with network connectivity ports that can be connected to a LAN. ... Features of Laser Printers over Inkjet Printers Many laser printers exist with different feature so I picked the mid class Xerox P...
The laser is one of the most significat inventions of the 20th century. ... This type of laser, called the He-Ne Laser was used for reading UPC product codes and surveying equipment. Lasers before the He-Ne laser were only able to discharge large 'blasts', this was the first laser able to produce a continuous stream. ... Today we have many uses for the laser. ... Lasers are also extremely beneficial for surgury. ...
Laser Design A laser usually consists of a gain medium. ... Other types of gas lasers are Argon-ion lasers, neon-copper lasers and helium-silver lasers. ... Other types of lasers include fiber lasers, photonic crystal lasers, semiconductor lasers, dye lasers, exotic media and free electron lasers. Uses of Lasers As there are many types of lasers, lasers have many uses in various sectors. ... In research, laser annealing, laser interferometry, laser scattering and spectroscopy. ...
Common hand held scanning technologies includes wands, lasers, and CCDs. ... Hand held laser scanners use a laser diode to create a scan line by projecting a beam of energy off a rotating prism or oscillating mirror. ... The light generating medium in first-generation moving beam laser installations was a Helium-Neon laser tube. In the past few years semiconductors capable of producing laser light have been incorporated in most laser products. ... Compared to the gas tube used to create Helium- Neon lasers, the laser diode is much smaller, requires significantly less power, and is more durab...
