Dynamically controlled random lasing with colloidal titanium carbide MXene
Abstract
Control of lasing properties through tailorable and dynamically tunable materials and reconfigurable compositions can augment the performance of random lasers for a wide range of applications. Here, a colloid of randomly dispersed weakly scattering single-layer titanium carbide (Ti3C2Tx) MXene flakes embedded within rhodamine 101 gain medium is experimentally shown to provide feedback for random lasing. Additionally, in contrast to previously reported random laser systems where the optical properties of scatterers are static, the relative permittivity of Ti3C2Tx MXene flakes can be varied under optical pumping due to the saturable absorption properties. Numerical simulations indicate that the observed nonlinear response of Ti3C2Tx MXene flakes enables dynamically tunable random lasing. Thus, pumping the Ti3C2Tx MXene flakes with a second optical source decreases the gain threshold required to obtain random lasing. Also, using numerical simulations, it is shown that the control over the intensity of the second pump enables tuning the field distribution of the random lasing modes. Considering the diversity of the MXenes family, the proposed MXene colloidal metamaterial design opens up a new avenue to advanced control of lasing properties for photonic applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 27, 2020
- Source ID
- 10.1364/ome.398132
Entities
People
- Alexander V. Kildishev
- Alexandra Boltasseva
- Kathleen Maleski
- Krishnakali Chaudhuri
- Mohamed Alhabeb
- Shaimaa I Azzam
- Vladimir Shalaev
- Xiangeng Meng
- Young L Kim
- Yury Gogotsi
- Zhuoxian Wang
Organizations
- Air Force Office of Scientific Research
- Defense Advanced Research Projects Agency
- National Natural Science Foundation of China
- Office of Naval Research
- United States Department of Energy