When.com Web Search

  1. Ads

    related to: semiconductor laser gain

Search results

  1. Results From The WOW.Com Content Network
  2. Semiconductor optical gain - Wikipedia

    en.wikipedia.org/wiki/Semiconductor_optical_gain

    Optical gain is the most important requirement for the realization of a semiconductor laser because it describes the optical amplification in the semiconductor material. This optical gain is due to stimulated emission associated with light emission created by recombination of electrons and holes.

  3. Semiconductor laser theory - Wikipedia

    en.wikipedia.org/wiki/Semiconductor_laser_theory

    In semiconductor laser theory, the optical gain is produced in a semiconductor material. The choice of material depends on the desired wavelength and properties such as modulation speed. It may be a bulk semiconductor, but more often a quantum heterostructure. Pumping may be electrically or optically . All these structures can be described in a ...

  4. Active laser medium - Wikipedia

    en.wikipedia.org/wiki/Active_laser_medium

    The active laser medium (also called a gain medium or lasing medium) is the source of optical gain within a laser. The gain results from the stimulated emission of photons through electronic or molecular transitions to a lower energy state from a higher energy state previously populated by a pump source. Examples of active laser media include:

  5. Gain-switching - Wikipedia

    en.wikipedia.org/wiki/Gain-switching

    Gain-switching is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, of the order of picoseconds (10 −12 s). [ 1 ] [ 2 ] In a semiconductor laser , the optical pulses are generated by injecting many carriers ( electrons ) into the active region of the device, bringing the carrier density ...

  6. Laser diode - Wikipedia

    en.wikipedia.org/wiki/Laser_diode

    One of the most interesting features of any VECSEL is the small thickness of the semiconductor gain region in the direction of propagation, less than 100 nm. In contrast, a conventional in-plane semiconductor laser entails light propagation over distances of from 250 μm upward to 2 mm or longer.

  7. Laser diode rate equations - Wikipedia

    en.wikipedia.org/wiki/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 in the device to the injection current and to device and material parameters such as carrier lifetime, photon lifetime, and the optical gain.