Monitoring of overmodulation effect in high efficient transmission gratings produced in photopolymers

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00240082" target="_blank" >RIV/68407700:21340/15:00240082 - isvavai.cz</a>
Alternative codes found
RIV/61389021:_____/15:00444914
Result on the web
<a href="http://spie.org/app/search/browse?Ntt=Monitoring%20of%20overmodulation%20effect%20in%20high%20efficient%20transmission%20gratings%20produced%20in%20photopolymers&Dy=1&Nty=1&Nrpp=20" target="_blank" >http://spie.org/app/search/browse?Ntt=Monitoring%20of%20overmodulation%20effect%20in%20high%20efficient%20transmission%20gratings%20produced%20in%20photopolymers&Dy=1&Nty=1&Nrpp=20</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1117/12.2070330" target="_blank" >10.1117/12.2070330</a>

Result language
angličtina
Original language name
Monitoring of overmodulation effect in high efficient transmission gratings produced in photopolymers
Original language description
In our laboratory, we deal with characterization of diffraction gratings produced in photopolymers. In such recording systems, the diffraction of light is induced via spatial modulation of refractive index and the diffraction efficiency of transmission gratings can reach values close to 100% due to relatively high values of this modulation. Depending on the exposure condition, the refractive index modulation can reach higher value than its optimum and the efficiency drops. This is an unwanted effect. Itis called an overmodulation and it is relatively complicated to find out whether under-or over-modulation occurs. To measure and evaluate this overmodulation effect in transmission gratings we propose a simple method based on multiple/two-wavelength measurement of diffraction efficiency. In this contribution, we would like to present the theoretical idea of the method and also experimental results obtained on photopolymer Bayfol HX.
Czech name
—
Czech description
—

Project
<a href="/en/project/LO1206" target="_blank" >LO1206: Modern optical systems and technologies</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proc. SPIE 9450, Photonics, Devices, and Systems VI
ISBN
978-1-62841-566-7
ISSN
0277-786X
e-ISSN
—
Number of pages
8
Pages from-to
"945011-1"-"945011-8"
Publisher name
SPIE
Place of publication
Bellingham
Event location
Prague
Event date
Aug 27, 2014
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
000349404500036

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