continuous-wave operation
21Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
22Laser diode — Top: a packaged laser diode shown with a penny for scale. Bottom: the laser diode chip is removed from the above package and placed on the eye of a needle for scale …
23Dye laser — Close up of a table top dye laser based on Rhodamine 6G, emitting at 580 nm (yellow orange). The emitted laser beam is visible as faint yellow lines. The orange dye solution enters the laser from the left, and is pumped by a 514 nm (blue green)… …
24Round-trip gain — refers to the laser physics, and laser cavitys (or laser resonators).It is gain, integrated along a ray, which makes a round trip in the cavity.At the continuous wave operation, the round trip gain gain exactly compensate both, the output… …
25Amplitude-shift keying — (ASK) is a form of modulation that represents digital data as variations in the amplitude of a carrier wave.The amplitude of an analog carrier signal varies in accordance with the bit stream (modulating signal), keeping frequency and phase… …
26On-off keying — Passband modulation v · d · e Analog modulation AM · …
27Self-pulsation — takes place at the beginning of laser action.As the pump is switched on, the gainin the active medium rises and exceeds the steady state value. The number of photons in the cavity increases, depleting the gain below the steady state value, and so …
28Power scaling — of a laser is increasing its output power without changing the geometry, shape, or principle of operation. Power scalability is considered an important advantage in a laser design.Usually, power scaling requires a more powerful pump source,… …
29Milton Feng — co created the first transistor laser, working with Nick Holonyak in 2004. The paper discussing their work was voted in 2006 as one of the five most important papers published by the American Institute of Physics since its founding 75 years ago.… …
30Thermal shock — is the name given to cracking as a result of rapid temperature change. Glass and ceramic objects are particularly vulnerable to this form of failure, due to their low toughness, low thermal conductivity, and high thermal expansion coefficients.… …
