BERLIN, March 17, 2010 – A 4-bit programmer's library is available for PicoQuant GmbH’s PicoHarp 300 time-correlated single-photon-counting system. API-compatible with the corresponding 32-bit library version 2.3 for Windows and Linux, it supports all 64-bit Linux versions with 2.6 kernels, offers throughput improvements for the instrument's time-tagged time-resolved (TTTR) mode and supports the latest PicoHarp hardware. Fluorescence lifetime images can be recorded at any resolution and size. The PicoHarp is based on a new time digitizer with 4-ps resolution and a processing rate of up to 10 million counts/s. Two input channels operate independently but with a common crystal time base. Synchronization rates from excitation sources can be up to 85 MHz, and onboard histogramming provides up to 65,536 bins, resulting in a time span of 262 ns. A plug-and-play device, it allows control and data acquisition from a desktop computer or notebook PC. The new version of the library is free to owners of earlier versions. It supports LabView and MatLab environments as well as Free Pascal and Mono. Sample application source code is provided.