We report divergence, astigmatism and M2 measurements for 8.77?m quantum cascade lasers. Measurements showed divergence of 62° by 32° FWHM ± 2° and M2 values of 1.81 and 1.22 for the fast and slow axes respectively. Astigmatism at source was ~4?m, less than half a wave.
Revised: March 12, 2008 |
Published: December 31, 2007
Citation
Krishnaswami K., B.E. Bernacki, B.D. Cannon, M.C. Phillips, N. Ho, P.J. Allen, and N.C. Anheier. 2007.Beam Characteristics of Mid-IR Quantum Cascade Lasers. In Conference on Lasers and Electro Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, 2007 Technical Digest Series. QELS '07, paper JThD48 (2 pages). Washington, District Of Columbia:Optical Society of America.PNNL-SA-52573.doi:10.1109/QELS.2007.4431123