Transformation of the multimode terahertz quantum cascade laser beam into a Gaussian, using a hollow dielectric waveguide.
Danylov AA, Waldman J, Goyette TM, Gatesman AJ, Giles RH, Linden KJ, Neal WR, Nixon WE, Wanke MC, Reno JL. Transformation of the multimode terahertz quantum cascade laser beam into a Gaussian, using a hollow dielectric waveguide. Appl Opt. 2007 Aug 01; 46(22):5051-5.