RP Photonics logo
RP Photonics
Technical consulting services on lasers, nonlinear optics, fiber optics etc.
Profit from the knowledge and experience of a top expert!
Powerful simulation and design software.
Make computer models in order to get a comprehensive understanding of your devices!
Success comes from understanding – be it in science or in industrial development.
The famous Encyclopedia of Laser Physics and Technology – available online for free!
The ideal place for finding suppliers for many photonics products.
Advertisers: Make sure to have your products displayed here!
… combined with a great Buyer's Guide!
VLib part of the

Keywords beginning with P

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.

The page with article article categories helps you to find more articles on a certain topical area.

You should also check out the Photonics Spotlight and the RP Software News, which you can receive as e-mail newsletters!

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

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

p–i–n photodiodes

pair-induced quenching → quenching

PANDA fibers → polarization-maintaining fibers

parabolic index fibers → graded-index fibers

parabolic pulses

Case study: parabolic pulses in a fiber amplifier

parametric amplification

Spotlight 2007-12-11: The idler wave – essential for parametric amplification and oscillation

parametric amplifiers → optical parametric amplifiers

parametric fluorescence

parametric generators → optical parametric generators

parametric nonlinearities

parametric oscillators → optical parametric oscillators

parasitic lasing

paraxial approximation

paraxial approximation → Gaussian beams

passive mode locking

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?

Self starting of passively mode-locked lasers: difficult to model

Case study: passively mode-locked picosecond bulk laser

passive Q switching → Q switching

patch cables → fiber patch cables

peak power

percentage of doping → doping concentration

periodic poling

Pfund cells → multipass gas cells

phase → optical phase

phase coherence → coherence

phase constant → propagation constant

phase matching

Spotlight 2008-03-10: Automatic phase matching

phase-matching bandwidth

phase mismatch → phase matching

phase modulators

phase noise

phase-sensitive amplification → parametric amplification

phase shift method for distance measurements

phase-squeezed light → squeezed states of light

phase synchronization of lasers → synchronization of lasers

phase velocity

phonon-terminated lasers → vibronic lasers


phosphate glasses


photo-induced attenuation → photodarkening

photoacoustic spectroscopy → spectroscopy

photochromic damage → photodarkening

photoconductive sampling

photoconductive switches

photocurrent → photodiodes



Spotlight 2009-11-13: Photodetection: optical and electrical powers


Spotlight 2009-12-13: Johnson-Nyquist noise in photodiode circuits

Spotlight 2006-10-16: Using a current amplifier for optical power measurements and recording with a photodiode

photoinduced losses → photodarkening


photometry → optical metrology


photon number states → nonclassical light

photon statistics → nonclassical light

photonic bandgap fibers

photonic crystal fibers

photonic integrated circuits

photonic metamaterials

photonic power → power over fiber



Spotlight 2008-05-05: Length of a photon

Spotlight 2007-03-23: Explaining the nature of photons to lay persons

Spotlight 2007-02-16: The science of biophotons

photoreceivers → photodetectors

photosensitivity → fiber Bragg gratings


picosecond lasers

picosecond pulse amplifiers → ultrafast amplifiers

planar lightwave circuits → photonic integrated circuits

planar waveguides

plasma deposition methods → fiber fabrication

plastic optical fibers

Pockels cells

Pockels effect

pointing stability → beam pointing fluctuations

polarization beam combining

polarization beat length

polarization controllers → fiber polarization controllers

polarization coupling → polarization beam combining

polarization extinction ratio → polarization of laser emission

polarization gradient cooling → Sisyphus cooling

polarization-maintaining fibers

Spotlight 2007-05-19: Why strong birefringence in fibers helps

polarization mode dispersion

polarization of laser emission

Spotlight 2008-04-28: Different kinds of polarization

polarization-preserving fibers → polarization-maintaining fibers

polarization rotators → Faraday rotators

polarization waves


Case study: polarizing cube

polarizing beam splitters → polarizers

polarizing cubes → thin-film polarizers

Polaroid filters → polarizers

polycrystalline fibers → mid-infrared fibers

polymer optical fibers → plastic optical fibers

population inversion

power amplification factor → amplification factor

power amplifiers → master oscillator power amplifier

power density

power efficiency → wall-plug efficiency

power monitors → optical power monitors

power over fiber

power scaling of lasers

Spotlight 2007-12-03: New paper on power scaling of lasers

Spotlight 2007-09-07: Power scaling in downward direction

power spectral density

power splitters → beam splitters


Poynting vector walk-off → spatial walk-off

praseodymium-doped fibers → rare-earth-doped fibers

precision fiber cleavers → fiber cleavers

preform → fiber fabrication

prism-based beam expanders → anamorphic prism pairs

prism pairs

prism retroreflectors → prisms


propagation constant

pulse break-up → nonlinear pulse distortion

pulse characterization

pulse compression

Case study: nonlinear pulse compression

pulse duration

Spotlight 2017-10-03: Importance of spectral wings on the pulse duration

pulse energy

pulse front tilt

pulse generation

pulse length → pulse duration

pulse pickers

pulse propagation modeling

Numerical representation of ultrashort pulses

Ultrashort pulse simulations with the RP Fiber Power software

pulse repetition rate

pulse shape → Gaussian pulses

pulse-to-pulse jitter → timing jitter

pulse width → pulse duration

pulsed laser deposition

pulsed lasers


pump–probe measurements

pump absorption

Spotlight 2007-08-22: Saturation of pump absorption – an important issue?

Case study: pump absorption in a double-clad fiber

pump chambers

pump depletion

pump parameter

pump threshold → threshold pump power

Acronyms beginning with P

P-APM = polarization additive-pulse mode lockingnonlinear polarization rotation

PCF = photonic crystal fiber or polymer cladded fiber

PCVD = plasma chemical vapor deposition → fiber fabrication

PECVD = plasma-enhanced chemical vapor deposition → fiber fabrication

PIC = photonic integrated circuit

PICVD = plasma impulse chemical vapor deposition → fiber fabrication

PL = photoluminescence

PLC = planar lightwave circuit

PLD = pulsed laser deposition

PM fiber = polarization-maintaining fiber

PMD = polarization mode dispersion

PMT = photomultiplier tube

POF = plastic optical fiber

PRF = pulse repetition frequency → pulse repetition rate

PSD = power spectral density

… 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.