The picoEmerald from APE Angewandte Physik & Elektronik is a Tunable/IR Beam Picosecond Laser that operates from 700 to 1950 nm. It provides an output power of over 700 mW at 800 nm with a pulse width of 2 ps and has a pulse repetition rate of 80 MHz. This linearly polarized laser has a horizontal radiation pattern and a polarization ratio of over 100:1. It has an integrated delay management (GDD dispersion compensated output) function that allows the perfect adjustment of the time delay between the IR and the signal beam even for external optics, to deal with dispersion differences at the different wavelengths. Each time the picosecond laser is tuned to a new signal wavelength the delay of the IR beam is adjusted automatically for achieving a temporal overlap between signal and IR pulse either at the output port or at an external experiment position.
The picoEmerald is optimized by finite element analysis and mechanical stability algorithms (misalignment stability optimization). It also has active cavity control functionality that continuously maximizes the efficiency of the integrated optical parametric oscillator. The laser is supplied with an internal closed-loop chiller to ensure stable operation. It is ideal for Coherent Anti-Stokes Raman Spectroscopy (CARS), Stimulated Raman Spectroscopy (SRS), Second Harmonics Imaging (SHG), pump-probe spectroscopy, SRS microscopy of vibrational probes, and Surface-Enhanced Hyper Raman Spectroscopy (SEHRS) applications.