Abstract

In this paper we used Fresnel diffraction in order to study the effects of hydrofluoric acid concentration and temperature on glass etching rate. The technique is very simple and accurate, and nanoscale change of the glass thickness can be detected and measured during etching. Using measured etching rates we have fabricated several glass phase steps. The fabricated phase steps were characterized by Fresnel diffractometry and optical interferometry. Using this method one can fabricate and characterize low-cost phase shifters of appropriate accuracy in less than 1 h.

© 2018 Optical Society of America

Application of Fresnel diffraction from phase steps to measurement of etching rate of transparent materials

Ali Mahmoudi
Appl. Opt. 54(26) 7993-7996 (2015)

Application of Fresnel diffraction from a phase step to the measurement of film thickness

Mohammad Taghi Tavassoly, Iman Moaddel Haghighi, and Khosrow Hassani
Appl. Opt. 48(29) 5497-5501 (2009)

Low-cost fabrication and characterization process for development of a sensitive optical fiber structure

Praba Shanker Sharma, Kuldeep Choudhary, Vivek Kumar Gupta, and Santosh Kumar
Appl. Opt. 61(27) 8057-8063 (2022)

Grey-scale silicon diffractive optics for selective laser ablation of thin conductive films

C. McDonnell, E. Coyne, and G. M. O’Connor
Appl. Opt. 57(24) 6966-6970 (2018)

Photothermoplastic recording media and its application in the holographic method of determination of the refractive index of liquid objects

N. A. Davidenko, I. I. Davidenko, V. A. Pavlov, N. G. Chuprina, V. V. Kravchenko, N. N. Kuranda, E. V. Mokrinskaya, and S. L. Studzinsky
Appl. Opt. 57(8) 1832-1837 (2018)