Editing Optical amplifier (section)

=== Solid-state amplifiers ===
'''Solid-state amplifiers''' are optical amplifiers that use a wide range of doped [[Solid-state laser|solid-state]] materials ([[Nd:YAG laser|Nd:]] Yb:YAG, [[Ti-sapphire laser|Ti:Sa]]) and different geometries (disk, slab, rod) to amplify optical signals. The variety of materials allows the amplification of different wavelengths, while the shape of the medium can distinguish between those more suitable for energy or average power scaling.<ref name="Catch the Peak">{{Cite journal|last=Frede|first=Maik| title=Catch the Peak|journal=Laser Technik Journal|volume=12|pages=30–33| publisher=wiley|doi=10.1002/latj.201500001|year=2015|doi-access=free}}</ref> Beside their use in fundamental research from [[gravitational wave]] detection<ref name="Single-frequency laser amplifiers">{{cite journal|last=Frede|first=Maik| title=Fundamental mode, single-frequency laser amplifier for gravitational wave detectors|journal=Optics Express|volume=15|issue=2|pages=459–65| publisher=OSA|doi=10.1364/OE.15.000459|pmid=19532263|year=2007|bibcode=2007OExpr..15..459F|hdl=11858/00-001M-0000-0012-BAD8-1|hdl-access=free}}</ref> to high energy physics at the [[National Ignition Facility]] they can also be found in many of today's [[Ultrashort pulse laser|ultra short pulsed lasers]].{{Citation needed|date=August 2020}}