A. Sincore, J. Cook, W. Li, E. Johnson, J. Bradford, L. Shah, and M. Richardson, "Beam Propagation of Gaussian and Annular Beams at 2 µm in the Presence of Thermal Lensing,"
in Conference on Lasers and Electro-Optics,
OSA Technical Digest (online)
(Optical Society of America, 2016), paper JTh2A.77.
The impact of Gaussian and annular beams on thermal lensing is experimentally tested by characterizing the propagation of 2 µm light in BK7. The effect of annular beams for high power propagation is discussed.