The light source of the ultra-high resolution UV spectrometer comes from this lab. In here, there is a set of configurated laser cavities which allows us to get highly monochromatic UV photons with the maximum power (according to the frequency region and the operator´s aligning skills). 

Our initial laser cavity is a Spectra Physics Millennia diode laser, configurated to provide 5W of output power at the second harmonic (532 nm). Such laser generates the pump light to the next laser cavity which is a Spectra Physics Matisse DS.

The Matisse DS is a ring dye laser cavity; where, the Millennia radiation excites the chilled circulating dye, which fluoresces at a specific frequency range. Moreover, this laser cavity is digitally frequency adjustable, manual and computer (fine tuning) optimized and scanned in a strongly narrow frequency range (about 1 cm^-1 in the fundamental visible region). All this can be achieved thanks to the attached Fabry Perot interferometer (reference station) and to all the optical components within the laser cavity. The visible laser light beam generated by this laser is of about 250 kHz broad.

The narrow broadband laser beam is then beam-splitted to mainly a Spectra Physics Wavetrain; where, through non linear optics the Second Harmonic of the fundamental light is generated. Therefore, highly monochromatic UV photons are produced.