Encyclopedia … combined with a great Buyer's Guide!

Keywords beginning with L

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

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

L band → optical fiber communications

Lambertian emitters and scatterers

lamp power supplies

lamp-pumped lasers

lanthanide lasers → rare-earth-doped laser gain media

large diameter optics

large mode area fibers

large mode area fibers: Spotlight 2019-11-19: Why are large mode areas problematic?

large mode area fibers: Spotlight 2007-04-28: Easier launching into fibers with large mode area?

large mode area fibers: Spotlight 2007-02-04: Continuing struggle for larger fiber mode areas

large mode area fibers: Spotlight 2006-08-10: Single-mode fibers with large mode areas

large-core fibers

laser 3D printing

laser ablation

laser absorption spectroscopy

laser additive manufacturing

laser amplifiers → optical amplifiers

laser applications

laser applications: Spotlight 2009-04-17: Miniature laser projectors – The next big laser thing?

laser beam characterization

laser beam characterization: Spotlight 2007-06-01: Characterize your pump beam!

laser beam combining → beam combining

laser beam delivery systems → beam delivery systems

laser beam machining → laser material processing

laser beam quality → beam quality

laser beam shapers → beam shapers

laser beam shutters → beam shutters

laser beams

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

laser beams: Spotlight 2010-04-08: Creating a top-hat laser beam focus

laser beams: Spotlight 2009-11-22: The beam focus – not just a demagnified version of your beam

laser beams: Spotlight 2007-07-11: What is a beam width, beam size, and a beam waist?

laser brazing → laser soldering

laser cavities → laser resonators

laser cladding

laser cleaning

laser coating

laser communications → free-space optical communications

laser cooling

laser cooling units

laser cross-sections → transition cross-sections

laser crystals

laser cutting

laser design

laser design: Spotlight 2011-02-10: Fiber lasers: more difficult to design than bulk lasers

laser design: Spotlight 2007-04-01: The ideal pump intensity distribution in an end-pumped solid-state laser

laser design: Spotlight 2006-07-05: Laser design: side product or the basis of laser development?

laser development

laser development: Spotlight 2017-01-27: Second opinion: a useful tool, also in laser technology!

laser development: Spotlight 2006-07-05: Laser design: side product or the basis of laser development?

laser diode bars → diode bars

laser diode collimators

laser diode drivers

laser diode modules

laser diode stacks → diode stacks

laser diode testing

laser diodes

laser diodes: Spotlight 2009-08-14: Progress on green laser diodes

laser disks → thin-disk lasers

laser distance meters → distance measurements with lasers

laser drilling

laser dyes → dye lasers

laser dynamics

laser energy meters → optical energy meters

laser engraving → laser marking

laser eye protection → laser safety glasses

laser fibers → rare-earth-doped fibers

laser gain → gain

laser gain media

laser glasses

laser goggles → laser safety glasses

laser guide stars

laser hardening

laser hazards → laser safety

laser heads

laser light

laser line mirrors → laser mirrors

laser line optics

laser line polarizers → thin-film polarizers

laser lines

laser linewidth → linewidth

laser links → free space optical communications

laser machining

laser marking

laser material processing

laser material processing: Spotlight 2022-08-04: Encyclopedia articles on laser material processing

laser media → laser gain media

laser micromachining

laser microscopy

laser mirrors

laser mirrors: Spotlight 2006-11-02: Reflection spectrum of tilted dielectric mirror

laser mirrors: Spotlight 2006-10-26: Residual transmission through highly reflecting mirrors

laser modeling and simulation

laser modeling and simulation: Tutorial: Modeling of fiber amplifiers and lasers

laser modeling and simulation: Spotlight 2017-12-04: Energy levels of solid-state gain media

laser modeling and simulation: Spotlight 2013-09-24: Simulation of a Q-switched Nd:YAG laser: numerical beam propagation reveals what happens, analytical reasoning explains it

laser modeling and simulation: Spotlight 2012-02-03: Simulation software: use commercial products or home-made software?

laser modeling and simulation: Spotlight 2006-11-16: Laser models – not always useful

laser modeling and simulation: Transverse dependencies in fiber amplifier and laser modeling

laser modeling and simulation: The transparent laser

laser modeling and simulation: What makes a good physics model

laser modules → laser heads

laser noise

laser noise: Noise in laser technology

laser noise: Spotlight 2006-10-09: Correct specifications for laser noise – valuable but hard to obtain

laser noise: Spotlight 2006-08-20: Lower noise from longer lasers

laser noise: Spotlight 2006-08-01: Lasers disturbed by vacuum?

laser optics

laser oscillators → lasers

laser physics

laser physics: Spotlight 2020-03-16: Laser physics helps to understand the corona virus crisis

laser pointers

laser pointers: Spotlight 2010-01-11: Beams of laser pointers: visible in air?

laser pointers: Spotlight 2009-04-06: Laser pointers in soccer games: not necessarily harmless

laser pointers: Spotlight 2006-12-16: Dangerous green laser pointers

laser power meters → optical power meters

laser processing heads

laser projectors: Spotlight 2009-04-17: Miniature laser projectors – The next big laser thing?

laser pulses → light pulses

laser pulses: Field Guide to Laser Pulses

laser pulses: Spotlight 2014-04-02: Lower emission cross-section leads to higher pulse energy?!?

laser pump chambers → pump chambers

laser radar → LIDAR

laser radiation → laser light

laser rangefinders

laser refrigeration → optical refrigeration

laser resonator design → resonator design

laser resonators

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

laser resonators: Spotlight 2009-09-19: Are laser resonators power scalable?

laser resonators: Spotlight 2009-04-05: Stability of resonators – an ambiguous term

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

laser rods

laser safety

laser safety: Spotlight 2007-12-18: The role of laser safety goggles

laser safety: Spotlight 2007-07-06: Promoting dangerous practices in laser labs

laser safety: Spotlight 2007-07-01: Nonsensical regulations undermine laser safety

laser safety: Spotlight 2006-12-16: Dangerous green laser pointers

laser safety glasses

laser scanners

laser soldering

laser specifications

laser specifications: Spotlight 2013-12-13: Avoiding trouble with laser specifications

laser speckle

laser speckle: Spotlight 2007-06-24: The plague of a narrow emission linewidth

laser spectroscopy

laser surface modification

laser threshold

laser threshold: Spotlight 2020-03-16: Laser physics helps to understand the corona virus crisis

laser threshold: Spotlight 2007-05-10: Fundamental limitation for sigma–tau product, gain efficiency, and laser threshold

laser threshold: Spotlight 2007-01-21: Laser operation far above threshold

laser transitions

laser transitions: Spotlight 2011-03-13: What if solid-state laser transitions would be much stronger?

laser transmitters → free space optical communications

laser trepanning → laser drilling

laser viewing cards

laser welding

laser-active glasses → laser glasses

laser-aided manufacturing → laser material processing

laser-induced breakdown

laser-induced damage


lasers: Can AI bots like Chat-GPT or Bard answer photonics questions?

lasers: Spotlight 2015-11-28: How to store light – and to understand the laser principle

lasers: Spotlight 2008-05-25: Einstein and the laser

lasers: Spotlight 2007-08-27: Distant healing of lasers

lasers: Spotlight 2007-02-22: Lossy laser cavities

lasers: Spotlight 2006-08-23: Lasers with nonlinear input–output characteristics

lasers: At which wavelength will a laser emit?

lasers for material processing

lasers for quantum photonics

lasers for Raman spectroscopy

lasers:: Field Guide to Lasers

lasing without inversion

lateral effect photodiodes → position-sensitive detectors

lateral modes → higher-order modes

launching light into fibers → fiber launch systems

law of Snellius → refraction

leaky modes

LEDs → light-emitting diodes

LEDs: Spotlight 2010-09-02: Why LEDs are energy-efficient, and why they could well increase energy consumption

left-handed metamaterials → photonic metamaterials

lens arrays → microlens arrays

lens speed → f-number


level manifolds → Stark level manifolds


lifetime broadening → gain bandwidth


light absorption → absorption

light beams

light choppers → optical choppers

light detection and ranging → LIDAR

light diffusers → diffusers

light forces

light forces: Spotlight 2006-10-22: Lasers attract dust to cavity mirrors

light intensity → optical intensity

light pulses

light pulses: Tutorial: Modeling of pulse amplification

light-emitting diodes

light-emitting diodes: Spotlight 2010-09-02: Why LEDs are energy-efficient, and why they could well increase energy consumption

light-induced absorption → photodarkening

lightwave communications → optical data transmission

line lasers → alignment lasers

linear absorption → absorption

linear polarization → polarization of light

linear polarizers → polarizers

linear resonators → standing-wave resonators

linear versus ring resonators → optical resonators


linewidth: Derivation of the Schawlow–Townes linewidth

linewidth: Spotlight 2015-10-17: The linewidth of single-frequency lasers

linewidth: Spotlight 2008-07-26: Beat signals with zero linewidth

linewidth: Spotlight 2007-06-24: The plague of a narrow emission linewidth

linewidth enhancement factor

liquid crystal displays

liquid crystal modulators

lithium niobate and tantalate → nonlinear crystal materials

Littrow gratings → diffraction gratings

long-pass gas cells → gas cells

long-period fiber Bragg gratings → fiber Bragg gratings

long-wave infrared detectors → infrared detectors

longitudinal pumping → end pumping


low pressure discharge lamps → gas discharge lamps

lower-state lifetime

LP modes

lumen → luminous flux


luminance: Spotlight 2021-03-08: Luminance – a term which is worth some thoughts


luminescence quenching → quenching


luminosity functions

luminous efficacy and efficiency

luminous flux

luminous intensity

lux → illuminance

luxmeters → photometers

Lyot filters

Acronyms with L

LAS = laser absorption spectroscopy

laser = light amplification by stimulated emission of radiation

LBAAM = Laser-Based Advanced Additive Manufacturing

LBM = laser beam machining

LBMM = laser beam micromachining

LC modulator = liquid crystal modulator

LCD = liquid crystal display

LCF = large-core fiber

LD = laser diode

LED = light-emitting diode

LEP = lateral effect photodiode → position-sensitive detectors

LGS = laser guide star

LHM = left-handed metamaterials → photonic metamaterials

LIBS = laser-induced breakdown spectroscopy

LID = laser-induced damage

LIDT = laser-induced damage threshold

LIDAR = light detection and ranging

LIDT = laser-induced damage threshold

LMA fiber = large mode area fiber

LPS lamp = low-pressure sodium lamp

… 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.