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Keywords beginning with S

See also our glossary!

A short explanation for a term is also displayed, when you move the mouse cursor on an article keyword in the list.

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On this page you find all our encyclopedia articles on keywords beginning with "S". Indented lines indicate articles on related topics. Further below, you find the acronyms.

(See also: list of products for the letter S)

S band → optical fiber communications

safety → laser safety

safety glasses → eye protection

sampled grating lasers → distributed Bragg reflector lasers

sampling → electro-optic sampling

sapphire fibers → mid-infrared fibers

satellite communications → free-space optical communications

saturable absorber mirror → semiconductor saturable absorber mirrors

saturable absorbers

Spotlight 2018-01-08: Self-starting of passively mode-locked lasers

Spotlight 2017-08-31: Passive mode locking with slow saturable absorbers: surprisingly stable!

Spotlight 2017-04-12: Does a saturable absorber in a laser lead to passive Q switching or mode locking?

Spotlight 2008-07-02: Stronger focusing avoids SESAM damage

Spotlight 2008-01-06: Saturation intensity or saturation fluence of a saturable absorber or a laser gain medium: what matters?

saturable Bragg reflectors

saturated output power → saturation power

saturation energy

saturation fluence → saturation energy

saturation intensity → saturation power

saturation of absorption → pump absorption

saturation of gain → gain saturation

saturation parameter → saturable absorbers

saturation power

scalability → power scaling of lasers

scaling procedures → power scaling of lasers

scanning beam profilers → beam profilers

Schawlow–Townes linewidth

sech2-shaped pulses

second-harmonic generation → frequency doubling

second-order dispersion → group delay dispersion

seed lasers


self-heterodyne linewidth measurement

self-injection locking → injection locking

self-phase modulation

Effect of self-phase modulation on the pulse bandwidth

Spotlight 2015-07-01: Self-phase modulation causes spectral broadening – does it really?

self-phase-stabilized pulses → carrier–envelope offset

self-referenced frequency combs → frequency combs

self-similar pulse propagation → parabolic pulses

self-starting mode locking

Spotlight 2018-01-08: Self-starting of passively mode-locked lasers

Spotlight 2008-05-13: Easier self-starting passive mode locking for short lasers

self-steepening → Kerr effect

self-terminating laser transitions

Sellmeier formula

semiconductor diode lasers → diode lasers

semiconductor disk lasers → vertical external-cavity surface-emitting lasers

semiconductor fiber lasers → fiber lasers

semiconductor lasers

semiconductor mirrors → crystalline mirrors

semiconductor optical amplifiers

semiconductor saturable absorber mirrors

sensitivity to alignment → alignment sensitivity

sensor cards → laser viewing cards

sensors → fiber-optic sensors

sequential sampling → electro-optic sampling

SESAM mode-locked lasers → mode-locked lasers

sheet polarizers → polarizers

short pulses → pulses

shot noise

Spotlight 2007-04-16: Questions and answers on shot noise

side pumping

signal-to-noise ratio

silica fibers

silicon photonics

silver mirrors → metal-coated mirrors

similaritons → parabolic pulses

single-atom lasers

Spotlight 2006-07-23: Single-atom lasers

single-crystal fibers

single-emitter laser diodes → broad area laser diodes

single-frequency lasers

single-frequency operation

single-mode cut-off → single-mode fibers

single-mode fibers

Tutorial chapter on single-mode fibers

single-mode operation

single photon counting

single-polarization fibers

single transverse mode operation → single-mode operation

single-wavelength lasers → single-frequency lasers

singly resonant cavities → resonant frequency doubling

singly resonant oscillators → optical parametric oscillators

Sisyphus cooling

slab lasers

slave laser

slope efficiency

Spotlight 2016-12-13: Nonlinear input–output curves for lasers

slow absorbers → saturable absorbers

slow axis → diode bars

slow light → velocity of light

small-signal gain

Snell's law → refraction

soft aperture mode locking → Kerr lens mode locking

solid-state lasers

Solid state lasers for ultrashort pulses – a diverse family

Spotlight 2018-04-06: Laser physics: the essential roles of phonons in solid-state lasers

Spotlight 2017-12-04: Energy levels of solid-state gain media

soliton compression → pulse compression

soliton fission → supercontinuum generation

soliton mode locking

Case study: soliton mode-locked bulk laser

soliton period

soliton self-frequency shift → solitons


Spotlight 2008-04-02: Solitons: lower dispersion, stronger dispersive effects!

Case study: higher-order solitons

Case study: soliton self-frequency shift

Case study: higher-order solitons

solution doping → fiber fabrication

space communications → free-space optical communications

spatial coherence → coherence

spatial hole burning

Spotlight 2006-09-03: Single-frequency operation stabilized by spatial hole burning

spatial walk-off

Spotlight 2007-11-19: Walk-off and phase-matching bandwidth in nonlinear crystals

Spotlight 2010-03-15: Spatial walk-off and beam quality in nonlinear frequency conversion

specialty fibers

specifications for lasers → laser specifications

specifications of noise and fluctuations → noise specifications


spectral beam combining

spectral brightness

spectral interferometry

spectral linewidth → linewidth

spectral phase

spectral power density → power spectral density

spectral width → bandwidth


spectrographs → spectrometers


spectroradiometers → spectrometers


spectrum → optical spectrum

speed of light → velocity of light


splicing → fusion splicing of fibers

split-step Fourier technique → pulse propagation modeling

spontaneous emission

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

spontaneous emission factor → Schawlow–Townes linewidth

spontaneous Raman scattering → Raman scattering

squeezed states of light

stability zones

Spotlight 2006-10-01: Stability zones of laser resonators

stabilization of lasers

stack lasers → diode stacks

standard quantum limit

standard single-mode fiber → single-mode fibers

standing wave pattern → interference

step-index fibers

stimulated Brillouin scattering → Brillouin scattering

stimulated emission

stimulated emission cross sections → transition cross sections

stimulated emission depletion microscopy → fluorescence microscopy

stimulated Raman scattering → Raman scattering

Stokes shift

streak cameras

stress rods → polarization-maintaining fibers

stretched-pulse fiber lasers → mode-locked fiber lasers

sum and difference frequency generation

supercontinuum generation

Case study: supercontinuum generation in a fiber


superluminal transmission


superluminescent diodes

superluminescent sources

Case study: ASE source with automatic spectral optimization


supermodes → harmonic mode locking


surface-emitting LEDs → light-emitting diodes

surface-emitting semiconductor lasers

symmetrized split-step Fourier method → pulse propagation modeling

sync-pumped parametric oscillators → optical parametric oscillators

synchronization of lasers

synchronous pumping

Acronyms beginning with S

SASE = self-amplified spontaneous emission → amplified spontaneous emission

SBR = saturable Bragg reflector

SBS = stimulated Brillouin scattering

SCG = supercontinuum generation

SESAM = semiconductor saturable absorber mirror

SFG = sum frequency generation

SFS = superfluorescent (actually superluminescent!) fiber source → superluminescent sources

SHG = second-harmonic generation = frequency doubling

SLD = superluminescent diode

SLED = surface-emitting LED or superluminescent diode

SNR = signal-to-noise ratio

SOA = semiconductor optical amplifier

SPAD = single-photon avalanche diode

SPIDER = spectral phase interferometry for direct electric-field reconstruction → spectral interferometry

SPM = self-phase modulation

SPOPO = synchronously pumped optical parametric oscillator

SRO = singly resonant (parametric) oscillator

SRS = stimulated Raman scattering

SSL = solid-state laser

STED = stimulated emission depletion microscopy → fluorescence microscopy

… and if you need any more help on such topics, consider to use the consulting services of RP Photonics Consulting GmbH! There is a variety of various 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.