EPLED SERIES Picosecond Pulsed UV & Vis LEDs The EPLED picosecond pulsed LEDs are ideal excitation sources for fluorescence lifetime measurements providing coverage in the UV and visible ranges. In Time-Correlated Single Photon Counting (TCSPC) they bridge the gap between the nanosecond flashlamp and expensive mode-locked Titanium sapphire femtosecond lasers. In addition, their external trigger capability makes them suitable for standalone operation in a wide range of spectroscopy applications. The EPLEDs are pre-adjusted for an optimum pulse width, with particular attention paid to reducing a long tail in the temporal profile. EPLEDs are robust, maintenance free, easy to operate and have proprietary beam conditioning optics. KEY FEATURES Optimised for TCSPC 15 pre-set repetition frequencies from 2.5 KHz to 20 MHz External trigger capability Spectrally purified output Fully integrated & compact design Extremely low RF radiation Beam conditioning optimised for Edinburgh Instruments spectrometers Drive electronics included

Typical Pulse Width (FWHM) (ps) Maximum Pulse Width (FWHM) (ps) Spectral Width (FWHM) (nm) Typical Average Power @20 MHz (µW) Laser Class Repetition Rate Bias Supply Trigger Output Interlock Input Hirose HR10A-7P-4P(73), (Link pin 1 and pin 2 to ground – interlock healthy) Trigger Input Hirose HR10A-7P-4P(73), (Signal pin 4 and ground pin 3) Trigger Input Signal TTL > 50 ns pulse. Trigger on rising edge. 0.0 V < Low level < 0.5 V, 2.5 V < High level < 5 V Spectral Conditioning Built-in filter to minimise out-of-band emission (no external spectral filtering needed) Physical Dimensions Overall:...