Light source with variable wavelength based on acousto-optical deflector

Данько, В. П., Коваленко, А. В., Коломієць, Р. О. (2021). Light source with variable wavelength based on acousto-optical deflector. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics(1), 116–119. https://doi.org/10.17721/1812-5409.2021/1.15

The proposed work analyzes the design features of the acousto-optical de?ector and ?lter on paratelurite. It is shown that under certain conditions the acousto-optical de?ector can be used as an acousto-optical ?lter (as an element that performs spectral ?ltering of the incident light beam). The fundamental possibility of creating  a monochromatic light source  with a variable wavelength and a spectrum width of about 5 nm using an acousto-optical de?ector as an element that adjusts the original wavelength is shown experimentally. As a broadband  light source  in this system, a semiconductor laser operating in subthreshold mode was used. The dependence of the output wavelength on the acoustic frequency is obtained. The comparison of experimental data with the calculated ones is given, it is shown that they have small di?erences.
Pages of the article in the issue: 116 - 119
Language of the article: Ukrainian