Astakhov Elisey I. RussiaSaratovSaratov State University, 410012, Russia, Saratov, Astrakhanskaya street, 83410010elisey.astakhov@gmail.com Author's articles Self-mixing Interferometry of Distance at Wavelength Modulation of Semiconductor Laser Methods of Autodyne Interferometry of the Distance by Injected Current Modulation of a Semiconductor Laser