Four channel holographic infrared optical element

B. Ivanov; M. Shopova; A. Baldjiev; E. Stoykova; V. Sainov

doi:10.1117/12.882082

17 January 2011 Four channel holographic infrared optical element

B. Ivanov, M. Shopova, A. Baldjiev, E. Stoykova, V. Sainov

Proceedings Volume 7747, 16th International School on Quantum Electronics: Laser Physics and Applications; 77470K (2011) https://doi.org/10.1117/12.882082
Event: XVI International School on Quantum Electronics: Laser Physics and Applications, 2010, Nessebar, Bulgaria

Abstract

The paper presents a holographic optical element (HOE) for a phase-stepping digital electronic speckle pattern interferometry with double symmetrical illumination of the object both in vertical and horizontal planes for precision full-field displacement measurement of objects under loading . More specifically, the proposed HOE allows for simultaneous reconstruction of four virtual and parallel to the HOE surface reference planes for off-axis illumination with two pairs of diode lasers emitting at two different wavelengths. In this way we transform a two-beam interferometer into a multiple beam interferometer with four separate channels. The HOE is constructed as a sandwich structure of two reflection (Denisuyk type) holograms of a diffuse metal screen illuminated at 30 degrees to the normal. Each of the holograms comprises two holographic reflection records made successively on a single holographic plate. Recording is performed in the visible part of the spectrum, and through additional chemical treatment the spectral maximum of the developed holograms is shifted into the IR region to achieve correct reconstruction for illumination at 790 nm and 830 nm. Super high resolution silver halide emulsion with resolution over 6000 line/mm is used for recording of holograms. The reconstructed four reference beams interfere with the beam reflected from the object, thus forming four independent optical channels for two laser beams at 790 nm with S and P polarizations, as well as for two S and P polarized beams at 830 nm.

Citation Download Citation

B. Ivanov, M. Shopova, A. Baldjiev, E. Stoykova, and V. Sainov "Four channel holographic infrared optical element", Proc. SPIE 7747, 16th International School on Quantum Electronics: Laser Physics and Applications, 77470K (17 January 2011); https://doi.org/10.1117/12.882082

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

Holograms

Holographic optical elements

Holography

Semiconductor lasers

Interferometers

Reflection

Diffraction

Show All Keywords

Keywords/Phrases

Search In:

Publication Years