Automated collimation testing using a temporal phase shifting technique in Talbot interferometry.
We propose a quantitative approach toward the detection of collimation of a coherent optical beam. For detection of collimation position of the collimator, a temporal phase shifting technique has been incorporated into Talbot interferometry. The slope of the phase maps depicts the collimation position of the collimator. This technique offers high precision, accuracy, and provides automated output.
Prakash
Shashi
S
Photonics Laboratory, Department of Electronics and Instrumentation, Institute of Engineering and Technology, Devi Ahilya University, Khandwa Road, Indore (M.P.)-452 017, India. sprakash_davv@rediffmail.com
Rana
Santosh
S
Prakash
Satya
S
Sasaki
Osami
O