Encyclopedia … combined with a great Buyer's Guide!

Keywords beginning with A

On this page you find all our articles on keywords beginning with "A". Further below, you find the acronyms.

(See also: list of products for the letter A.)

Abbe number

ABCD matrix

aberrations → optical aberrations

absolute phase → carrier–envelope offset


absorbing coatings → black coatings



absorption coefficient

absorption cross-sections → transition cross-sections

absorption efficiency → pump absorption

absorption length

absorption saturation → pump absorption

absorption spectroscopy → laser absorption spectroscopy

absorptivity → absorptance

acceptance angle in fiber optics

acceptance angle in fiber optics: Case study: The numerical aperture of a fiber: a strict limit for the angular field distribution?

acceptance angle in nonlinear optics → critical phase matching

achromatic lenses → lenses

achromatic optics

acousto-optic deflectors

acousto-optic frequency shifters

acousto-optic modulators

acousto-optic Q switches

acousto-optic tunable filters


active fibers

active laser media → laser gain media

active mirror → thin-disk lasers

active mode locking

active mode locking: Case study: actively mode-locked laser

active optical cables → fiber-optic links

active Q switching → Q switching

active stabilization of lasers → stabilization of lasers

adaptive optics

add–drop multiplexers → wavelength division multiplexing

additive-pulse mode locking

adhesives → optical adhesives

adiabatic soliton compression

adiabatic soliton compression: Case study: adiabatic soliton compression

adjoint modes → resonator modes

afocal optical systems

air-guiding fibers → hollow-core fibers

air-spaced etalons: Case study: air-spaced etalon

alexandrite lasers

alignment lasers

alignment sensitivity: Spotlight 2015-05-14: Alignment sensitivity of laser resonators – an important design criterion

alignment sensitivity: Spotlight 2011-06-10: Are compact resonators more stable?

alignment sensitivity: How to calculate misalignment effects in laser resonators

alignment sensitivity of optical resonators

alkali vapor lasers → metal vapor lasers

all-solid-state lasers

allowed transitions → forbidden transitions

alpha factor → linewidth enhancement factor

aluminum mirrors → metal-coated mirrors

amplification bandwidth → gain bandwidth

amplification factor

amplified spontaneous emission

amplified spontaneous emission: Tutorial chapter on ASE in fiber amplifiers

amplified spontaneous emission: Case study: ASE in ytterbium-doped fibers

amplified spontaneous emission: Spotlight 2015-03-11: Strange time dependence of ASE from a fiber amplifier

amplified spontaneous emission: Spotlight 2013-07-08: Amplified spontaneous emission in fiber amplifiers

amplified spontaneous emission: Spotlight 2007-08-06: Fiber amplifiers: more ASE for larger core with higher NA?

amplified spontaneous emission: Spotlight 2007-07-30: Fiber amplifiers: stronger ASE in backward direction

amplifier chains

amplifier chains: Tutorial chapter on multi-stage fiber amplifiers

amplifier chains: Modeling multi-stage amplifiers with RP Fiber Power

amplifier fibers → rare-earth-doped fibers

amplifier modeling: Tutorial: Modeling of fiber amplifiers and lasers

amplifier noise

amplifier noise: Tutorial chapter on noise of fiber amplifiers

amplifier noise: Noise in laser technology

amplifier noise: Spotlight 2006-07-16: Spontaneous emission and amplifier noise

amplifier stages → amplifier chains

amplifier transitions → laser transitions

amplifiers → optical amplifiers

amplifiers: Spotlight 2007-01-27: Noise figure of amplifiers

amplitude noise → intensity noise

amplitude-squeezed light

anamorphic prism pairs

anamorphic prisms → prisms

angle cleaving → cleaving of fibers

angle phase matching → critical phase matching

anomalous dispersion → chromatic dispersion

anti-reflection coatings

anti-reflection coatings: Case study: dual-wavelength anti-reflection coating

anti-Stokes fluorescence cooling → optical refrigeration

antibunching → nonclassical light

aperiodic fiber gratings → fiber Bragg gratings

aperture stops

apochromats → achromatic optics

apodized fiber Bragg gratings → fiber Bragg gratings

applications of lasers → laser applications

arc lamp pumping → lamp-pumped lasers

arc lamps

argon fluoride lasers → excimer lasers

argon ion lasers

arrayed waveguide gratings

artificial saturable absorbers → saturable absorbers

ASE sources: Case study: ASE source with automatic spectral optimization

aspheric lenses → aspheric optics

aspheric optics


asynchronous sampling → optical sampling

athermal lasers → radiation-balanced lasers

atmospheric correction → laser guide stars

attenuation coefficient → absorption coefficient

attenuators → optical attenuators

attenuators: Spotlight 2015-02-05: Attenuating laser beams – not that easy

attosecond pulse spectroscopy → time-resolved spectroscopy

attosecond pulses → high harmonic generation



avalanche photodiodes

axial mode spacing → free spectral range

axial modes → resonator modes


Acronyms with A

ANDi = all-normal dispersion (fiber)

AO = adaptive optics

AO deflector = acousto-optic deflector

AOBD = acousto-optic beam deflector

AOC = active optical cable → fiber-optic links

AOFS = acousto-optic frequency shifter

AOM = acousto-optic modulator

AOTF = acousto-optic tunable filter

APD = avalanche photodiode

APM = additive-pulse mode locking

AR → AR coating = anti-reflection coating

ASE = amplified spontaneous emission

AVD = axial vapor deposition → fiber fabrication

AWG = arrayed waveguide grating

… and if you need any more help on such topics, consider to use the consulting services of RP Photonics AG! There is a variety of services available in topical areas such as lasers, amplifiers, nonlinear optics, fiber optics, ultrashort pulses, multilayer mirrors, noise and fluctuations, and other topics in photonics and optoelectronics.