Time Resolved Micro-Photo-Luminescence Measurement Station
Abstract
Understanding transient response of an active arrangement, whether a new material, device or a network of components is of great importance in various fields of science and technology. This ranges from material discovery, to laser design, to using light for emulating different phenomena.In the context of novel laser designs, for example, it can be used to estimate the fundamental modulation bandwidth or to show the propensity of a device for generating short pulses.Time Resolved Photo-Luminescence (TRPL) is an experimental technique that provides the spectral and temporal evolution of the emission of a sample following its illumination by a short pulse of light. In most cases, a short pulse of light generates electron-hole pairs that decay to lower energy levels in the sample. Consequently, the measurement of the optical spectrum as a function of time provides a means to measure the transition energies and their lifetimes. Since these decay times are on the order of picoseconds or nanoseconds, and the intensity of light emitted can be very weak, a conventional spectrum analyzer cannot provide the resolution required. Instead, it isnecessary to use a streak camera.The PIs laboratory is already equipped with several micro-photoluminescent measurement stations. These characterization set-ups have allowed the PI~s group to develop and test a variety of novel light sources (PT-symmetric lasers, coaxial nanolasers, and topological insulator lasers) and to study light transport in various active coupled systems. By adding a short pulse source and a streak camera, and by modifying the setup accordingly, the PI expects to implement a powerful setup to characterize a number of new phenomena in active coupled systems. The addition of theproposed equipment is expected to positively affect the PI~s current and future DoD funded projects.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 13, 2019
- Source ID
- N000141912390
Entities
People
- Khajavikan Mercedeh
Organizations
- Office of Naval Research
- United States Navy
- University of Central Florida Board of Trustees