IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 20, NO. 9, MAY 1, 2008
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Comments and Corrections Erratum to “Emission and Propagation Properties of Midinfrared Quantum Cascade Lasers” Kannan Krishnaswami, Bruce E. Bernacki, Bret D. Cannon, Nicolas Hô, and Norman C. Anheier In the above paper [1], due to a production error, the unit micrometer (m) was changed to millimeter (mm) in the captions of Figs. 2 and 4. The correct figures and captions follow. Fig. 4 Beam profiles at focus for (a) fast and (b) slow axes with a radius of 58.8 and 71.5 m, respectively.
REFERENCES [1] K. Krishnaswami, B. E. Bernacki, B. D. Cannon, N. Hô, and N. C. Anheier, “Emission and propagation properties of midinfrared quantum cascade lasers,” IEEE Photon. Technol. Lett., vol. 20, no. 4, pp. 306–308, Feb. 15, 2008
Fig. 2 Divergence profile of the fast and slow axes of QCLs with (a) 1-m and (b) 8-m die setback from the edge of the c-mount. Manuscript received February 14, 2008. The authors are with the Pacific Northwest National Laboratory, Richland, WA 99352 USA (e-mail:
[email protected]). Digital Object Identifier 10.1109/LPT.2008.919565
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