The optical spectrum analyzer (OSA) displays the spectral content of the tunable picosecond pulsed source. Since the central wavelength rapidly oscillates at 70kHz, the device integrates the emitted spectra into a composite picture spanning roughly 1050nm to 1068nm.
This fast scanning is achieved using a Fabry-Pérot filter placed immediately after coherent supercontinuum generation in a nonlinear fiber. The spectral linewidth of our picosecond pulses is approximately 300pm.
Combined with another synchronous picosecond pulse train at wavelength of 800nm, this setup is ideally suited for high-resolution, fast-scan CARS/SRS experiments.
Coordinator - University of Limerick
Dr. Christophe Silien
