The FR-103MC is a palm-size Autocorrelator. It can be configured either interferometric w/TPC (Two Photon Conductivity photosensor), or background-free w/NL (Non Linear crystal SHG). As an ultrafast detector, it is easy-to-use while providing unparalleled resolution. Ideal for OEM applications, the FR-103MC is suitable for a pulsewidth range of 10fs – 10ps. It can be provided either for a free-space or fiber-coupled (FC/PC or FC/APC) input. Optionally, it can be supplied together with the Computer Data Acquisition (/CDA) for the display and analysis of autocorrelation traces with a PC. The standard version is suitable for pulse rep rates >10kHz. Slow Scan Option (/SSO) extends input pulse rep rates to any >5Hz. A new version, FR-103TPM, provides a high-resolution pulsewidth monitor for Two-Photon Microscopy applications.