Megahertz-frequency large-area optical modulators at 1.55 microm based on solution-cast colloidal quantum dots.
We report the realization of large-area, communications-wavelength electro-optic modulators made via simple solution-casting onto an arbitrary substrate. The devices employ colloidal quantum dots synthesized in, and processed from, the solution phase. Devices exhibit greater than 30% modulation depth at the 1.55 microm eye-safe wavelengths of interest in free-space optical communications. The devices retain considerable modulation depth beyond 1 MHz.
Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ontario M5S 3G4, Canada.
Sjoerd
S
Hoogland
Vlad
V
Sukhovatkin
Harnik
H
Shukla
Jason
J
Clifford
Larissa
L
Levina
Edward H
EH
Sargent
D000042:Absorption; D003102:Colloids / Q000737:chemistry*; D004560:Electricity; D008854:Microscopy, Electron; D055095:Optics and Photonics / Q000295:instrumentation*; D045663:Quantum Dots; D012996:Solutions; D013997:Time Factors
D003102:Colloids; D012996:Solutions