caa a22 4500 606243755 CHVBK 20210128101326.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s12596-014-0203-z doi (NATIONALLICENCE)springer-10.1007/s12596-014-0203-z Interferometric-auto-collimation technique for the determination of small angular tilt of a plane mirror [Elektronische Daten] [Sanjib Chatterjee, Y. Kumar] A new common path interferometric auto-collimation technique is proposed. A laser autocollimator is combined with a modified triangular path interferometer for generating Fizeau fringes formed due to interference between two split up plane wave components with angular separation equal to four times of the angular deflection of the plane test mirror. The angular deflection of the plane test mirror is measured either from the fringe spacing or more accurately, from the slope of the optical path difference variation of the interference field obtained by applying polarization phase shifting interferometry. Results for a validation experiment are presented. The Optical Society of India, 2014 Auto-collimation nationallicence Polarization phase shifting interferometry nationallicence Fizeau fringes nationallicence Optical path difference nationallicence Chatterjee Sanjib Raja Ramanna Centre for Advanced Technology, 452013, Indore, India aut Kumar Y. Raja Ramanna Centre for Advanced Technology, 452013, Indore, India aut Journal of Optics Springer India 44/1(2015-03-01), 68-76 0972-8821 44:1<68 2015 44 12596 https://doi.org/10.1007/s12596-014-0203-z text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s12596-014-0203-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chatterjee Sanjib Raja Ramanna Centre for Advanced Technology, 452013, Indore, India aut NATIONALLICENCE 700 1- Kumar Y. Raja Ramanna Centre for Advanced Technology, 452013, Indore, India aut NATIONALLICENCE 773 0- Journal of Optics Springer India 44/1(2015-03-01), 68-76 0972-8821 44:1<68 2015 44 12596