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Interference filter based beam confinement for increased mechanical phase modulation

Ewers, Benjamin and Lorbeer, Raoul-Amadeus (2019) Interference filter based beam confinement for increased mechanical phase modulation. OSA Continuum, 2 (5), pp. 1502-1509. Optical Society of America. DOI: 10.1364/OSAC.2.001502 ISSN 2578-7519

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Official URL: https://doi.org/10.1364/OSAC.2.001502

Abstract

Modulating the phase or rather the optical path difference of a laser beam is a challenging task. Not too seldom limitations in optical path modulation bandwidth and optical path stroke limit the desired application. Approaches to compensate for these restrictions typically trade one parameter for another and vice versa. To avoid this trade off between parameters, an in-place beam folding would be desirable. Here, an approach based on a wedged optical light interference-filter trap (WOLIT) allows the increase of the optical path difference while maintaining a small and fast optical path modulator. We showed that with the WOLIT acting as an opto-mechanical-gearbox, mechanical mirror movements of 10 nm are sufficient to generate an optical path difference greater than 1 µm at a frequency of 100 kHz.

Item URL in elib:https://elib.dlr.de/126780/
Document Type:Article
Title:Interference filter based beam confinement for increased mechanical phase modulation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ewers, Benjaminbenjamin.ewers (at) dlr.deUNSPECIFIED
Lorbeer, Raoul-Amadeusraoul.lorbeer (at) dlr.dehttps://orcid.org/0000-0003-3674-9796
Date:1 April 2019
Journal or Publication Title:OSA Continuum
Refereed publication:No
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:No
In ISI Web of Science:No
Volume:2
DOI :10.1364/OSAC.2.001502
Page Range:pp. 1502-1509
Publisher:Optical Society of America
ISSN:2578-7519
Status:Published
Keywords:Phase modulation, Atomic force microscopy, Effective refractive index, Laser beams, Laser light, Optical delay lines
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Stuttgart
Institutes and Institutions:Institute of Technical Physics > Solid State Lasers and Nonlinear Optics
Deposited By: Lorbeer, Raoul-Amadeus
Deposited On:04 Apr 2019 09:40
Last Modified:20 Aug 2019 05:03

Available Versions of this Item

  • Interference filter based beam confinement for increased mechanical phase modulation. (deposited 04 Apr 2019 09:40) [Currently Displayed]

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