Method for laser-assisted image formation in transparent objects

摘要

PCT No. PCT/RU95/00235 Sec. 371 Date Jun. 26, 1997 Sec. 102(e) Date Jun. 26, 1997 PCT Filed Nov. 3, 1995 PCT Pub. No. WO97/16387 PCT Pub. Date May 9, 1997The method for laser-assisted image formation in transparent specimens consists in establishing a laser beam having different angular divergence values in two mutually square planes, followed by focusing the lase beam at a present point of the specimen. In the course of image formation the specimen is displaced with respect to the point of radiation focusing in order to change an angle between the plane with a maximum laser beam angualr divergence and the surface of the image portion being formed so as to suit the required contrast of the image portion involved.