Ultraviolet laser setup

The narrow-band tunable pulsed dye amplifier setup

A Pulsed-Dye Amplifier laser system can be used for a variety of experiments, from cavity ring-down, resonance enhanced multi-photon ionization and laser-induced fluorescence detection. The system is injection seeded by the output of a continuous-wave ring dye lasers tunable in the range 560 - 660 nm. The PDA then consists of three stages of traveling wave light amplification delivering powerful pules (up to 100 mJ) in 5-6 nanoseconds with a bandwidth of ~ 80 MHz. Options for frequency doubling to the wavelength range  280 - 330 nm as well as frequency-tripling to 200 - 220 nm are available. Precision wavelength calibration ca be performed by measuring a reference spectrum of saturated iodine absorption or by a WS-& accurate wavelenngth meter.

Some essential parts of the laser setup are displayed below:

 pdaring small

On the left the Pulsed-Dye Amplifier; on the right the ring dyelaser.
The system has been used to perform highly accurate measurements on the XUV-spectrum of the hydrogen molecule. The system has been in employed in several LASERLAB-ACCESS projects focusing on predissociation properties of the CO molecule, the Nitrogen molecule and the HF molecule.
Several other dye laser systems are avaliable to perform XUV double resonance experiments.
Contact Person at LaserLaB: Wim Ubachs, email: w.m.g.ubachs@vu.nl