Folding mirror schlieren diffraction interferometer |
| |
Authors: | Kumar Raj Chhachhia D P Aggarwal A K |
| |
Affiliation: | Coherent Optics Division, Central Instruments Organisation, Chandigarh, India. |
| |
Abstract: | We demonstrate the use of a mirror as a viewing diaphragm to generate a built-in diffracted reference beam in schlieren diffraction interferometry (SDI). The use of a mirror edge as a diffracting element instead of a conventional knife edge considerably enhances the contrast of the schlieren pattern, and it is shown to be equal to that of a phase knife edge. This increase in contrast is due to the fact that the otherwise unutilized diffracted beam in SDI is recombined in the described folding mirror geometry. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|