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Schematic diagram of a typical laser, showing the three major parts. A laser is constructed from three principal parts: An energy source (usually referred to as the pump or pump source), A gain medium or laser medium, and; Two or more mirrors that form an optical resonator.
Date/Time Thumbnail Dimensions User Comment; current: 10:55, 12 July 2011: 1,035 × 321 (65 KB): Alex-engraver: Correct input pumping light to Snell's law: 09:38, 13 June 2011
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The laser diode chip removed and placed on the eye of a needle for scale 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. SEM (scanning electron microscope) image of a commercial laser diode with its case and window cut away. The anode ...
Schematic diagram of a typical 2-3 mW red (633 nm) helium–neon laser tube Commercial He-Ne lasers are relatively small devices compared to other gas lasers, having cavity lengths usually ranging from 15 to 50 cm (but sometimes up to about 1 meter to achieve the highest powers), and optical output power levels ranging from 0.5 to 50 m W .
Diagram of the first ruby laser. A - Positive lead.B - Mirror coating.C - Xenon flashtube.D - Negative lead.E - Laser beam.F - Pumping cavity.G - Ruby rod.H - Trigger wire.. A ruby laser is a solid-state laser that uses a synthetic ruby crystal as its gain medium.
Diagram of a simple VCSEL structure. The vertical-cavity surface-emitting laser (VCSEL / ˈ v ɪ k s əl /) is a type of semiconductor laser diode with laser beam emission perpendicular from the top surface, contrary to conventional edge-emitting semiconductor lasers (also called in-plane lasers) which emit from surfaces formed by cleaving the individual chip out of a wafer.
Schematic representation of an undulator, at the core of a free-electron laser. The first free-electron laser was developed by John Madey in 1971 at Stanford University [5] using technology developed by Hans Motz and his coworkers, who built an undulator at Stanford in 1953, [6] [7] using the wiggler magnetic configuration.