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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/61389021:_____/15:00444914

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1206" target="_blank" >LO1206: Moderní optické systémy a technologie</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proc. SPIE 9450, Photonics, Devices, and Systems VI

ISBN

978-1-62841-566-7

ISSN

0277-786X

e-ISSN

—

Počet stran výsledku

8

Strana od-do

"945011-1"-"945011-8"

Název nakladatele

SPIE

Místo vydání

Bellingham

Místo konání akce

Prague

Datum konání akce

27. 8. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000349404500036