Ultrafast Light Pulses

The Working Group of Optical Technologies is doing research both on the generation and the application of ultrafast light pulses. The corresponding development work concentrates on compact and reliable light sources (see section laser physics) for nonlinear spectroscopy and microscopy (see section nonlinear optics). For these fields of application, the tunability across a wide wavelength range and the possibility of adjusting the pulse duration are required. Typically, the pulses are generated by mode-locking in a laser oscillator and are then boosted to a higher pulse energy in a power amplifier. A suitable choice of linear and nonlinear influences is required for the generation and amplification process in order to be able to realize low-noise light pulses with high peak power.