Abstract

The tested light is projected onto an arrangement composed of two special spiral gratings, in which the second spiral grating is positioned at the Talbot image of the first one. From the shapes of the resultant moiré fringes, the quality of collimation of the tested light can be easily checked.

© 1991 Optical Society of America

Circular–linear grating Talbot interferometry with moiré Fresnel imaging for beam collimation

Krzysztof Patorski, Krzysztof Pokorski, and Maciej Trusiak
Opt. Lett. 39(2) 291-294 (2014)

Method for acquiring the characteristic parameter of the dual-spiral moiré fringes

Lei Huang and Xianyu Su
Opt. Lett. 33(8) 872-874 (2008)

Collimation method using a double grating system

Luis Miguel Sanchez-Brea, Francisco Jose Torcal-Milla, Francisco Javier Salgado-Remacha, Tomás Morlanes, Isidoro Jimenez-Castillo, and Eusebio Bernabeu
Appl. Opt. 49(17) 3363-3368 (2010)

Automated collimation testing by incorporating the Fourier transform method in Talbot interferometry

Jitendra Dhanotia and Shashi Prakash
Appl. Opt. 50(10) 1446-1452 (2011)

Laser beam collimation using Talbot interferometry

A. R. Ganesan and Putcha Venkateswarlu
Appl. Opt. 32(16) 2918-2920 (1993)