laser diode - ορισμός. Τι είναι το laser diode
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Τι (ποιος) είναι laser diode - ορισμός

SEMICONDUCTOR LASER
Injection laser diode; Diode laser; Semiconductor laser; Laser diodes; Semiconductor lasers; Injection laser; Laser diode bar; Semiconductor diode laser; Injection laser diodes; Diode lasers; Semiconductor laser diode; Laser Diode; High power solid-state laser source; High power Solid-state laser source
  • SEM ([[scanning electron microscope]]) image of a commercial laser diode with its case and window cut away. The anode connection on the right has been accidentally broken by the case cut process.
  • A laser diode with the case cut away. The laser diode chip is the small black chip at the front; a photodiode at the back is used to control output power.
  • Semi-conductor lasers (Bottom to Top: 660 nm, 635 nm, 532 nm, 520 nm, 445 nm, 405 nm)
  • A simple and low power metal enclosed laser diode
  • Nick Holonyak
  • Diagram of front view of a double heterostructure laser diode; not to scale
  • Diagram of front view of a simple quantum well laser diode; not to scale
  • Diagram of front view of a separate confinement heterostructure quantum well laser diode; not to scale
  • Diagram of a simple VCSEL structure; not to scale

Diode-pumped solid-state laser         
  • Neodymium ions in various types of ionic crystals, and also in glasses, act as a laser gain medium, typically emitting 1,064 nm light from a particular atomic transition in the neodymium ion, after being "pumped" into excitation from an external source. Selection of 946 nm transition light is possible, as well
TYPE OF LASER
Dpss laser; DPSS laser; Diode pumped solid state; Diode pumped solid state laser; Diode-pumped solid state laser; DPSS; Diode-pumped solid-state; Dpssl; Diode-pumped solid state
A diode-pumped solid-state laser (DPSSL) is a solid-state laser made by pumping a solid gain medium, for example, a ruby or a neodymium-doped YAG crystal, with a laser diode.
Laser diode rate equations         
MODELS OF THE PERFORMANCE OF A LASER DIODE
Laser Diode Rate Equations
The laser diode rate equations model the electrical and optical performance of a laser diode. This system of ordinary differential equations relates the number or density of photons and charge carriers (electrons) in the device to the injection current and to device and material parameters such as carrier lifetime, photon lifetime, and the optical gain.
Laser diode thermal desorption         
  • Schematic of the LDTD technology
Draft:Laser Diode Thermal Desorption; Laser Diode Thermal Desorption
Laser diode thermal desorption (LDTD) is an ionization technique that is coupled to mass spectrometry to analyze samples with atmospheric pressure chemical ionization (APCI). It uses a laser to thermally desorb analytes that are deposited on a stainless steel sheet sample holder, called LazWell.

Βικιπαίδεια

Laser diode

A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with electrical current can create lasing conditions at the diode's junction.: 3 

Driven by voltage, the doped p–n-transition allows for recombination of an electron with a hole. Due to the drop of the electron from a higher energy level to a lower one, radiation, in the form of an emitted photon is generated. This is spontaneous emission. Stimulated emission can be produced when the process is continued and further generates light with the same phase, coherence and wavelength.

The choice of the semiconductor material determines the wavelength of the emitted beam, which in today's laser diodes range from infrared to the ultraviolet (UV) spectrum. Laser diodes are the most common type of lasers produced, with a wide range of uses that include fiber optic communications, barcode readers, laser pointers, CD/DVD/Blu-ray disc reading/recording, laser printing, laser scanning and light beam illumination. With the use of a phosphor like that found on white LEDs, laser diodes can be used for general illumination.