We present a relatively simple method for efficiently transforming a single high-order mode into a nearly Gaussian beam of much higher quality. The method is based on dividing the mode into equal parts that are then combined coherently. We illustrate the method by transforming a Hermite–Gaussian (1, 0) mode with Mx2=3 into a nearly Gaussian beam with Mx2=1. 045 . Experimental results are presented and compared with theoretical results.
© 2002 Optical Society of America
G. Machavariani, N. Davidson, A. A. Ishaaya, A. A. Friesem, and E. Hasman, "Efficient formation of a high-quality beam from a pure high-order Hermite-Gaussian mode," Opt. Lett. 27, 1501-1503 (2002)