High Diffraction Efficiency Gratings In Dichromated Gelatin For Near Infrared Wavelengths

F. Chataux; N. Chateau; J. P. Hugonin; J. C. Saget; J. Taboury

doi:10.1117/12.961663

26 October 1989 High Diffraction Efficiency Gratings In Dichromated Gelatin For Near Infrared Wavelengths

F. Chataux, N. Chateau, J. P. Hugonin, J. C. Saget, J. Taboury

Proceedings Volume 1136, Holographic Optics II: Principles and Applications; (1989) https://doi.org/10.1117/12.961663
Event: 1989 International Congress on Optical Science and Engineering, 1989, Paris, France

Abstract

Various applications of holographic optical elements (HOEs) have been widely studied in the litterature. They include array illuminators for input, output and offset beams on nonlinear optical arrays, connectors in optical cellular processors, head up displays, etc... Thick holograms show the potential of very high diffraction efficiencies and therefore attract particular attention. Photopolymers and dichromated gelatin (DCG) are among the best materials for a large index modulation extending over a thickness of several microns. Three practical and theoretical problems are associated with their use for thick HOEs: . chromatic aberration results from the wavelength change between recording -usually in the blue part of the spectrum- and reconstruction which often involves near infrared lines; . field aberrations in the case of reconstruction by more than one source point; . optimization of diffraction efficiency. In the present communication, we concentrate on diffraction efficiency; we elude the problem of aberrations by considering only plane waves holograms, i.e. holographic gratings. Firstly,we review previous approaches to diffraction modelling and reformulate them using an alternate rigourous analysis. Secondly, we discuss some issues of practical interest with reference to the various models and to our experimental results, such as Bragg peaks profile, optimal index modulation depth as a function of wavelength. Emphasis is put on the obtention of high efficiency in the near infrared. Thirdly, we apply our analysis to study the influence of polarisation and of index profile nonlinearities.

Citation Download Citation

F. Chataux, N. Chateau, J. P. Hugonin, J. C. Saget, and J. Taboury "High Diffraction Efficiency Gratings In Dichromated Gelatin For Near Infrared Wavelengths", Proc. SPIE 1136, Holographic Optics II: Principles and Applications, (26 October 1989); https://doi.org/10.1117/12.961663

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Diffraction

Diffraction gratings

Modulation

Holography

Polarization

Near infrared

Holographic optical elements

Show All Keywords

Keywords/Phrases

Search In:

Publication Years