Tailoring Chirp in Spin-Lasers

The interplay of spin injection in lasers and their nonlinear response leads to novel spintronic devices [1]. Such spin-lasers can enable desirable properties including threshold reduction, bandwidth enhancement, and low chirp [1-3]. These lasers can also be viewed as spin-amplifiers, since high circular polarization in the output can be achieved even with nearly spin-unpolarized injection [2,3]. In the present work, we study chirp in spin-lasers and suggest new modulation schemes to improve their performance. Supported by NSF-ECCS, U.S. ONR, AFOSR-DCT, and NSF-NEB 2020. \\[4pt] [1] M. Holub et al., Phys. Rev. Lett. 98, 146603 (2007); J. Rudolph et al., Appl. Phys. Lett. 87, 241117 (2005). \\[0pt] [2] J. Lee, W. Falls, R. Oszwadowski, and I. \v{Z}uti\'c, Appl. Phys. Lett. 97, 041116 (2010).\\[0pt] [3] C. G{\o}thgen, R. Oszwadowski, A. Petrou, and I. \v{Z}uti\'c, Appl. Phys. Lett. 93, 042513 (2008).\\[0pt] [4] G. Boeris, J. Lee, K. V\'yborn\'y, and I. \v{Z}uti\'c, preprint (2011).