3D Materials Analytics

UV Autocorrelator

General information

Investigation area

3D Materials Analytics

Spectroscopy

Surface Analytics
Techniques

Spectroscopy
Manufacturer

various, customized setup
Fabrication year

2025
Measured quantity

The system measures an approximation of the autocorrelation function
Main application

Optical characterization of quantum light sources
Facility

Access to this instrument is possible via the MAPEX Core Facility for Materials Analytics

Technical aspects

This UV autocorrelator is sensitive from around 230 – 700 nm, while its optimal optical detection window stretches from 230 – 550 nm. The applied detectors yield a biphoton time resolution of ≤ 220 ps. The low noise UV laser source in use has a wavelength of 266 nm, which enables the characterization of most UV single photon sources (e.g., based on quantum dots, point defects). Due to the acquired piezo mirror, this UV autocorrelator can automatically readjust itself, which is a key feature for longer acquisition times needed for pioneering materials. In addition, this feature enhances the usability of this setup for external users. Furthermore, conventional time-resolved photoluminescence studies (TRPL) can be performed on the basis of this UV autocorrelator.
Additional measurement possibilities

The autocorrelator can also perform time-resolved photoluminescence analyses from 230 - 550 nm with a time-resolution of ≤ 180 ps.

Updated by: MAPEX