Introduction

Time-resolved fluorescence measurement results contain information in two dimensions: time and wavelength. The fluorescence lifetime does not depend on substance concentration and fluorescence intensity. The system does not require frequent calibration operations. It is a powerful means for material characterization, physical and chemical kinetic analysis, and related mechanism research. It is widely used in materials testing and analysis, biomedical and other fields. This experimental system uses an ultraviolet 355nm laser with a sub-nanosecond pulse width as the excitation light source and an avalanche diode with a nanosecond response speed as the detector. It can obtain nanosecond-level resolution fluorescence lifetime data of the material to be tested, and then analyze the dynamics of the material.This experimental system is suitable for setting up modern physics experimental courses for students in materials, biology and other disciplines, or as a professional experimental instrument for students in optoelectronics-related majors, and can also be used as laboratory standing test equipment.

Experiments

Learn and master the measurement principles of time-resolved fluorescence and fluorescence lifetime;

Construction of nanosecond time-resolved fluorescence detection system;

Time-resolved fluorescence measurements of phosphor samples;

Fluorescence lifetime analysis.

Experimental Knowledge

Fluorescence, excitation spectrum, emission spectrum, quantum yield, fluorescence decay, fluorescence lifetime, transient fluorescence.

Typical Testing

Software                                                               Fluorescence Control Effect Diagram

Microchip Laser                                                                         Detector