Lasing

Unfortunately, silicon is a difficult lasing material to deal with, since it has certain properties which block lasing.

A more cost-effective laser design has been created that outputs multi-color lasing and offers a step forward in chip-based lasers and miniaturization.

These extreme conditions caused previously studied devices to break down well before lasing could be observed.

The minimum energy needed for a laser to emit is called the lasing threshold.

When light is emitted at a particular wavelength, it is called lasing.

After passing through an aperture and a magnetic field, many of the atoms in the beam are left in the upper energy level of the lasing transition.

Frances FitzGerald, "Way Out There in the Blue: Reagan, Star Wars and the End of the Cold War", pg. 129 Since the lasing medium was fairly small, a single bomb could host a number of them and attack multiple ICBMs in a single burst.

In some lasing media this is impossible.

Lasing without maintaining the medium excited into a population inversion was discovered in 1992 in sodium gas and again in 1995 in rubidium gas by various international teams.

Saturated operation meant that the maximum possible power was extracted from the lasing medium, resulting in the high peak energy of 0.3 mJ.

The lasing medium in some dye lasers and vibronic solid-state lasers produces optical gain over a wide bandwidth, making a laser possible which can thus generate pulses of light as short as a few femtoseconds (10 −15 s).

These materials are pumped optically using a shorter wavelength than the lasing wavelength, often from a flashtube or from another laser.

This form of art is represented by a wide range of handicrafts, such as chasing, jeweler, engraving in metal, carving in wood, stone and bone, carpet-making, lasing, pattern weaving and printing, knitting and embroidery.

Unlike gas, liquid, or solid-state lasers, which rely on bound atomic or molecular states, FELs use a relativistic electron beam as the lasing medium, hence the term free-electron.

Uses a lasing medium immersed in an index matched coolant.

When the modulation rate is on time scales much slower than the cavity lifetime and the time period over which energy can be stored in the lasing medium or pumping mechanism, then it is still classified as a "modulated" or "pulsed" continuous wave laser.

With VCSOAs, reduced feedback is necessary to prevent the device from reaching lasing threshold.