Low power optical bistability from quantum dots in a nanobeam photonic crystal cavity
Abstract
We demonstrate a low power thermally induced optical bistability at telecom wavelengths and room temperature using a nanobeam photonic crystal cavity embedded with an ensemble of quantum dots. The nanobeam photonic crystal cavity is transfer-printed onto the edge of a carrier chip for thermal isolation of the cavity with an efficient optical coupling between the nanobeam waveguide and optical setup. Reflectivity measurements performed with a tunable laser reveal the thermo-optic nature of the nonlinearity. A bistability power threshold as low as 23 μW and an on/off response contrast of 6.02 dB are achieved from a cavity with a moderately low quality factor of 2830. Our device provides optical bistability at power levels an order of magnitude lower than previous quantum-dot-based devices.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 22, 2022
- Source ID
- 10.1063/5.0098003
Entities
People
- Ahmad Mansoori
- Chang-min Lee
- Edo Waks
- Ganesh Balakrishnan
- Mustafa Atabey Buyukkaya
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Laboratory for Telecommunication Sciences
- National Science Foundation
- Office of Naval Research
- University of Maryland
- University of New Mexico