Auto-phase-locked measurement of time-gated luminescence spectra with a microsecond delay

Zece Zhu, Xuewen Shu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Time-resolved techniques are widely used in measuring the spectra and lifetimes of the excited states of molecules. However, the relative apparatus always requires gated detector and phase-matching circuitry, which is expensive to implement and maintain. Herein, a novel auto-phase-locked method for time-gated luminescence (TGL) spectra measurement was developed by adjusting the exciting and detecting optical paths to pass through the same chopper wheel, which simultaneously acted as a pulse generator and detecting shutter. This low-cost system needs no phase-matching circuitry or control system. It can detect TGL spectra with a delay time of only microseconds, demonstrating a high temporal resolution for thermally activated delayed fluorescence detection.

Original languageEnglish
Pages (from-to)2575-2578
Number of pages4
JournalOptics Letters
Issue number11
Early online date30 Apr 2018
Publication statusPublished - 23 May 2018


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