Laser diodes

Laser diodes are commonly used in optical storage devices and for high speed optical communication.

Laser diodes form a subset of the larger classification of semiconductor p-n junction diodes.

Laser diodes have the same reliability and failure issues as light emitting diodes.

Laser diodes are numerically the most common laser type, with 2004 sales of approximately 733 million units,

Laser diodes find wide use in telecommunication as easily modulated and easily coupled light sources for fiber optics communication.

** Laser hair removal ( lasers and laser diodes )

Laser diodes are also used for better resolution and precision.

Laser diodes emit less-collimated light due to their short cavity, and therefore higher collimation requires a collimating lens.

For Planet-wide geodetic surveys, previously impossible, we can still mention Satellite Laser Ranging ( SLR ) and Lunar Laser Ranging ( LLR ) and Very Long Baseline Interferometry ( VLBI ) techniques.

" Laser beams can be focused to very tiny spots, achieving a very high irradiance.

Laser radiation output through the front mirror can be seen to produce a tiny ( about 1mm in diameter ) intense spot on the screen, to the right.

The current laser at the UK Atomic Weapons Establishment ( AWE ), the HELEN ( High Energy Laser Embodying Neodymium ) 1-terawatt neodymium-glass laser, can access the midpoints of pressure and temperature regions and is used to acquire data for modeling on how density, temperature and pressure interact inside warheads.

When used in conjunction with the Counter-air Laser, they can fire small projectiles.

Laser treatments can be painful, expensive ( though covered by many insurances ), and can cause little scarring when used appropriately.

Beamed propulsion in the form of laser can be used to send power to a photovoltaic panel, for Laser electric propulsion.

Laser guidance can be provided either from the launcher, such as the nose-mounted opto-electronics of the AH-64 Apache attack helicopter, other airborne target designators or from ground based observers, the latter two options allowing the launcher to break line of sight with the target and seek cover.

This allows extremely narrow band detection ( much narrower than any possible color filter can achieve ) as well as precision measurements of phase and frequency of a light signal relative to a reference light source, as in Laser Doppler Vibrometry.

Laser printer speed can vary widely, and depends on many factors, including the graphic intensity of the job being processed.

Laser photocoagulation can be used in two scenarios for the treatment of diabetic retinopathy.

Laser printers are capable of printing on plain paper using a special toner containing sublimation dyes which can then be permanently heat-transferred to T-shirts.

Laser Particle Counters are an effective way to measure filter effectiveness, medical grade can test for particles as small as 0. 3 micrometres.

Laser ablation, laser beam machining and wafer dicing are all industrial areas where high-speed mirror galvanometers can be found.

Laser photocoagulation can be used to stop bleeding during bronchoscopy.

Laser stimulation is a promising technology for improving the auditory resolution of implants but further research using fiber optics to stimulate the neurons of the inner ear is required before products using the technology can be developed.

The BBC published this work on Laser Discs in LVROM format, which can now be read only by a few machines, and there were fears that the data would become unreadable.

As the Laser disc format is not digitally encoded and does not make use of compression techniques, it is immune to video macroblocking ( most visible as blockiness during high motion sequences ) or contrast banding ( subtle visible lines in gradient areas, such as out-of-focus backgrounds, skies, or light casts from spotlights ) that can be caused by the MPEG-2 encoding process as video is prepared for DVD.

Laser cutting can place many precise holes in a web.

Existing LGBs in US service can be upgraded to Dual Mode Laser Guided Bombs ( DMLGB ) by adding GPS receivers which enable all weather employment.

Laser guided bombs can be launched without the laser designator turned on, in which case it will follow a ballistic path, until such time as the seeker picks up the reflected laser signal.

Laser designators operate in the Infra-Red wavebands and attenuation of the laser signal by the moisture content of the atmosphere can reduce the signal strength below the threshold of the seeker.

The Laser Mégajoule will be one of the most powerful lasers in the world, allowing fundamental research and the development of the laser and plasma technologies.

The Missile Defense Agency's Airborne Laser program uses a chemical laser which has successfully intercepted a missile taking off, so an offshoot of SDI could be said to have successfully implemented one of the key goals of the program.

The Laser Interferometer Space Antenna ( LISA ) probe had been planned to be launched in 2025 to directly detect gravitational waves and would have been able to measure relative displacements with a resolution of 20 picometres over a distance of 5 million kilometres, yielding a strain sensitivity of better than 1 part in 10 < sup > 20 </ sup >.

Laser driven systems were initially believed to be able to generate commercially useful amounts of energy.

Speckle is considered to be a problem in laser based display systems like the Laser TV.

The Combaticons that formed Bruticus were the first of the Decepticons to be introduced into the show along with Scourge, who as a toy was a black repaint of G2 Laser Prime.

Laser rangefinders appear in T-72 tanks since 1978 ; earlier examples were equipped with parallax optical rangefinders, which could not be used for distances under.

* Laser ablation does not seem to be any more effective than other physician-applied methods, but is often used as a last resort and is extremely expensive.

According to the simulation, a 70 Mega Amp Z-pinch facility in combination with a Laser may be able to produce spectacular energy return of 1000 times the expended energy.

Commissioning should be completed by the end of 2011, when it will join Keck II to perform Laser Guide Star Adaptive Optics.

These “ signatures ” are of great relevance to LIGO ( Laser Interferometer Gravitational Wave Observatory ), a multi-institution gravity-wave experiment for which Thorne has been a leading proponent — in 1984, he cofounded the LIGO Project ( the largest project ever funded by the NSF ) to discern and measure any fluctuations between two or more ' static ' points ; such fluctuations would be evidence of gravitational waves, as calculations describe.

The time-compressed CLV re-issue of Jaws no longer had the original soundtrack, having had incidental background music replaced for the video disc version due to licensing cost ( the music would not be available until the THX Laser Disc box set was released in 1995 ).