PicoQuant has introduced two pulsed laser modules VisUV-1064 and VisUV-532-HP, rounding out the VisUV platform line-up. Up to now, modules based on this platform provided laser pulses at 266nm, 355nm, and 532nm, either individually or in combination with one or two other wavelengths. The new VisUV-1064 emits picosecond pulsed laser light at 1064nm with an average optical power of more than 1W, while the VisUV-532-HP provides high-powered sub nanosecond pulses at 532nm with an average optical power of up to 750mW.
The previously available short pulsed (<70ps) green and ultraviolet versions of the VisUV are ideally suited for fluorescence lifetime spectroscopy and microscopy applications. The high powered green and NIR versions with broader pulse widths can be used for applications requiring higher laser powers such as Lidar or in-situ Raman Spectroscopy.
All of these modules can be operated at internally selectable repetition rates between 31.25kHz and 80MHz or externally triggered at any repetition rate between 1Hz and 80MHz. The output beams are of high quality, featuring a nearly perfectly circular and Gaussian shaped profile with M² values below 1.3.
The modules from the VisUV laser platform are based on a master oscillator fibre amplifier (MOFA) concept with possible frequency conversion. The master oscillator generates infrared picosecond pulses with variable repetition rates using gain-switching techniques from PicoQuant. The seed laser output is then converted using either second, third, or fourth harmonic generation.