Lasing without inversion (LWI), or lasing without population inversion, is a technique used for light amplification by stimulated emission without the...

technique, known as lasing without inversion, allows optical amplification to take place without producing a population inversion between the two states...

context of Fermi gases. Polariton condensation is sometimes called “lasing without inversion”. Polaritons are bosonic quasiparticles which can be thought of...

fluorescence suppressed Raman spectroscopy. Lasing without maintaining the medium excited into a population inversion was demonstrated in 1992 in sodium gas...

amplification without requiring a population inversion. The effect was the precursor of a class of effects known as Lasers Without Inversion, or the LWI...

effects, such as electromagnetically induced transparency (EIT), lasing without inversion (LWI), stimulated raman adiabatic passage (STIRAP) and nonlinear...

to: Legal Writing Institute, an American non-profit organization Lasing without inversion, a laser technique Living Water International, a faith-based non-profit...

spectroscopy, from electromagnetically induced transparency and lasing without inversion to nonlinear optics at maximal coherence. 2000 Alexander Prokhorov...

be configured to emit photons either perpendicular or horizontal to the lasing medium layers depending on end use. Direct diode infrared semiconductor...

to produce a population inversion. Feedback of the ASE by the laser's optical cavity may produce laser operation if the lasing threshold is reached. Excess...

also form an optical cavity. In 1986 Richard K. Chang et al. demonstrated lasing using ethanol microdroplets (20–40 micrometers in radius) doped with rhodamine...

titled "Light Amplifiers Employing Collisions to Produce Population Inversions" (subsequently amended as a continuation in part and finally issued as...

lasers. An FP laser will lase at multiple cavity modes within the gain bandwidth of the lasing medium. The number of lasing modes in an FP laser is usually...

communications performance 10 to 100 times over radio frequency technology without incurring increases in mass, volume or power. DSOC is capable of providing...

developed. Some are known as dynamic auto focus systems. They adjust the lasing parameters in real time to adapt to the changes to the material as it is...

28, 1997 and expired January 28, 2014. A similar process was patented without being commercialized by R. F. Housholder in 1979. As SLS requires the use...

that uses an organic dye as the lasing medium, usually as a liquid solution. Compared to gases and most solid state lasing media, a dye can usually be used...

recombination is strictly suppressed. This allows for devices with high lasing efficiency, low lasing threshold, and stable frequency, where the liquid-crystal laser...

ultraviolet and x-rays means that X-ray free electron lasers (XFEL) need to work without a resonant cavity. Consequently, in an X-ray FEL (XFEL) the beam is produced...

Bragg reflectors. An early demonstration of polaritonic lasing and a comparison to conventional lasing was achieved in 2003 by H. Deng et al. at Stanford University...

picosecond) dissociates back into two unbound atoms. This forms a population inversion.[citation needed] The wavelength of an excimer laser depends on the molecules...

characteristic makes it easier to achieve population inversion, a crucial requirement for lasing, when using lanthanide-activated gain materials. Miniaturized...

layers than conventional Raman, can be used to discover counterfeit drugs without opening their packaging, and to non-invasively study biological tissue...

neodymium-doped yttrium lithium fluoride (Nd:YLF)), which lases deeper in the infrared at 1064 nm. This lasing action is due to an electronic transition in the...

content team, content team (July 23, 2019). "LASEK: A Magic Helping You Do Without Eyeglasses". sinahealthtour.com. Archived from the original on July 25...

all for the goal of being isolated as purely as possible. For transport without contact. There are three different approaches. Transport by gravity using...

its directional precision, a laser precisely cuts and cauterizes tissues without damaging neighboring cells. It's the safest technique and most precise...

clean surfaces, remove paint or coating, or prepare surfaces for painting without damaging the underlying surface. High power lasers clean a large spot with...

on walls, ceilings or other surfaces including theatrical smoke and fog without refocusing for the differences in distance, as is common with video projection...

colliding-pulse mode-locked laser the absorber steepens the leading edge, while the lasing medium steepens the trailing edge of the pulse. There are also passive mode-locking...