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Diode laser head

BioPhotonics
Sep 2009
PicoQuant GmbHRequest Info
 
PicoQuant.jpgPicoQuant GmbH has unveiled a 531-nm green picosecond pulsed diode laser head that is based on a master-oscillator fiber-amplifier concept with frequency modulation. Measuring 195 × 112 × 24 mm, it is suitable for use in fluorescence and fluorescence lifetime measurement. The instrument can be triggered externally and synchronized with other equipment in the experimental setup. Pulsed at a variable repetition rate from 10 kHz to 40 MHz, the output from the master oscillator – or seed laser – is directly connected to an ytterbium-doped fiber amplifier, boosting the seed laser’s output by >10 dB. The system is based on a spliced all-fiber setup, which the company says makes it maintenance-free.


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GLOSSARY
fluorescence
The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
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