title: Phase-locked 10 MHz reference signal for frequency domain time-resolved fluorescence measurements.
abstract: A complete electronic system that is suitable for use in megahertz frequency domain time-resolved fluorescence instruments based on mode-locked lasers is described. The circuit produces a 10 MHz signal, phase locked to the mode-locked laser pulse frequency, which is required by many commercial frequency synthesizers as the external reference signal. This device is particularly useful in conjunction with ultrafast gated intensified charge coupled device cameras capable of being frequency modulated for time-resolved fluorescence imaging.
authors.affiliation: Ultrafast and Microspectroscopy Laboratories, School of Chemistry, The University of Melbourne, Victoria 3010, Australia. trevoras@unimelb.edu.au
authors.forename: Trevor A
authors.initials: TA
authors.lastname: Smith
authors.forename: Damian K
authors.initials: DK
authors.lastname: Bird
authors.forename: John W
authors.initials: JW
authors.lastname: Nuske
mesh_terms: D001315:Australia; D004581:Electronics / Q000295:instrumentation* / Q000592:standards; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009991:Oscillometry / Q000295:instrumentation* / Q000592:standards; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013050:Spectrometry, Fluorescence / Q000295:instrumentation* / Q000592:standards; D013997:Time Factors