A tunable delay of ultrashort laser pulses in semiconductor waveguide structures are demonstrated in cascaded amplifying and absorbing semiconductor waveguides and compared with a single sectioned waveguide. The single sectioned waveguide shows a low transmission at the maximum delay. This is effectively avoided with the cascaded waveguide configuration, where it is demonstrated viable achieving a net pulse delay while maintaining a transmission of unity. For both type of devices, a pulse advancement is observed, at large pulse energies, that existing models are unable to account for.
Bibliographical noteCopyright: 2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE
- ultrafast optics
- semi-conductor waveguides
- quantum well devices
Hansen, P. L., Poel, M. V. D., Yvind, K., & Mørk, J. (2010). Pulse delay measurements in cascaded quantum well gain and absorber media. I E E E Photonics Technology Letters, 22(6), 365-367. https://doi.org/10.1109/LPT.2009.2039349