Ultrafast optical properties of lithographically defined quantum dot amplifiers
Luis Miaja Avila, Varun B. Verma, James J. Coleman, Richard P. Mirin, Kevin L. Silverman
We measure the ultrafast optical response of lithographically defined quantum dot amplifiers at 40 K. Recovery of the gain mostly occurs in less than 1 picosecond, with some longer-term transients attributable to carrier heating. Recovery of the absorption proceeds on a much longer timescale, representative of relaxation between quantum dot levels and carrier recombination. We also measure transparency current-density in these devices.
, Verma, V.
, Coleman, J.
, Mirin, R.
and Silverman, K.
Ultrafast optical properties of lithographically defined quantum dot amplifiers, Applied Physics Letters, [online], https://doi.org/10.1063/1.4865238
(Accessed November 30, 2023)