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Multipass amplifiers with self-compensation of the thermal lens
- Source :
- Applied optics, Applied optics, Optical Society of America, 2018, 57 (35), pp.10323. ⟨10.1364/AO.57.010323⟩, Applied Optics
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- We present a novel architecture for a multi-pass amplifier based on a succession of optical Fourier transforms and short propagations that shows a superior stability for variations of the thermal lens compared to state-of-the-art 4f-based amplifiers. We found that the proposed multi-pass amplifier is robust to variations of the active medium dioptric power. The superiority of the proposed architecture is demonstrated by analyzing the variations of the size and divergence of the output beam in form of a Taylor expansion around the design value for variations of the thermal lens in the active medium. The dependence of the output beam divergence and size is investigated also for variations of the number of passes, for aperture effects in the active medium and as a function of the size of the beam on the active medium. This architecture makes efficient use of the transverse beam filtering inherent in the active medium to deliver a beam with excellent quality (TEM00) without additional losses.<br />24 pages, 11 figures
- Subjects :
- Materials science
Aperture
FOS: Physical sciences
02 engineering and technology
01 natural sciences
law.invention
010309 optics
symbols.namesake
Optics
law
0103 physical sciences
Electrical and Electronic Engineering
Divergence (statistics)
Engineering (miscellaneous)
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]
business.industry
Amplifier
021001 nanoscience & nanotechnology
Atomic and Molecular Physics, and Optics
Power (physics)
Lens (optics)
Fourier transform
symbols
0210 nano-technology
business
Beam (structure)
Beam divergence
Optics (physics.optics)
Physics - Optics
Subjects
Details
- Language :
- English
- ISSN :
- 00036935 and 15394522
- Database :
- OpenAIRE
- Journal :
- Applied optics, Applied optics, Optical Society of America, 2018, 57 (35), pp.10323. ⟨10.1364/AO.57.010323⟩, Applied Optics
- Accession number :
- edsair.doi.dedup.....43e0bb205dfd20353815e570ca9905db