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It's the current you have to inject into the device so that the gain inside it is equal to the losses due to absorption and scattering of the light generated. When you have reached this amount of gain, then lasing can start to occur.
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What are semiconductor diode laser describe with energy band diagram the construction and working of a semiconductor diode laser?
construction and working of semiconductor laser
What determines if a laser is solid state gas liquid or semiconductor?
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Difference between light emitting diode and laser?
LEDs, known as light emitting diodes, are comprised of two lead semiconductor light sources. Laser transmitters, also known as laser diodes are comprised of an electrically charged semiconductor laser.
Is there anyway to build a blue laser driver circuit WITHOUT using a LM317 Chip?
No. you need that regulator to accuratly measure the current or you will destroy the laser diode . Blue laser Diodes will Blow on regular 3 volt batteries because a regular battery (aaa) supplies way more current to the diodes than it needs thus burning it out .Most AA batteries can produce 1 amp or more . (Poof)
Who Invented laser guns?
the laser was invented.....
Does semiconductor lasers and laser diodes are similar?
Semiconductor lasers are made with laser diodes, with added circuitry to measure and regulate the diode current/output.
Is dye or semiconductor or gas or excimer laser used in laser printers?
Semiconductor laser
What are semiconductor diode laser describe with energy band diagram the construction and working of a semiconductor diode laser?
construction and working of semiconductor laser
What is semiconductor laser?
A semiconductor laser is a type of laser which utilizes a semiconductor as its Photon source, rather than a gas (Argon, CO2, Etc...) laser which uses inert gas as an active medium. Many physicists and engineers consider a semiconductor laser a type of "Solid-State" or "Two-State" LASER.
Is a diode laser a nd. yag laser?
No. A diode laser is a semiconductor and Nd:YAG is a crystal.
What is the principle of semiconductor laser?
Semiconductor lasers are diodes which are electrically pumped. Recombination of electrons and holes created by the applied current introduces optical gain. Reflection from the ends of the crystal form an optical resonator, although the resonator can be external to the semiconductor in some designs.
What is the difference between solid state laser and semiconductor laser?
LASER is Light amplification by stimulated emission of radiation. As far as I have understood, Solid State laser is a macroscopic form of diode laser. Thus a small semiconductor diode is similar to a solid state laser except for the mechanism of lasing and size.
What kind of gas is in a red LASER diode?
None, LASER diodes are solid state semiconductor devices.
What determines if a laser is solid state gas liquid or semiconductor?
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What has the author S L Palfrey written?
S. L. Palfrey has written: 'Monolithic narrow-linewidth InGaAsP semiconductor laser for coherent optical communications' -- subject(s): Semiconductor lasers, Laser communication systems
Who invented the first semiconductor laser used in CD players?
Robert Hall invented the first semiconducter laser for CD players :)
The main difference of the semiconductor lasers and gas lasers?
The main difference is the medium of the laser.
