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1 April 1992 Cw dye laser synchronously pumped by the third harmonic of a modelocked cw Nd:YLF laser for tunable blue and green excitation and picosecond time-correlated photon counting detection
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Abstract
The range of excitation wavelengths for a setup of time-resolved detection of fluorescence was extended with tunable blue by the synchronous pumping of a Stilbene 3 dye laser. A conversion efficiency of over 30% was found when pumping a coherent radiation (CR) model CR590 with extended cavity length using the third harmonic output of a cw mode-locked Nd:YLF laser (CR Antares). For decreasing the repetition rate of excitation pulses, an electro- optic modulator in a dual pass configuration was used. In this way, pulses with durations of less than 4 ps were generated with energies of up to 2.6 nJ and a repetition rate of 600 kHz, fitting very well with the requirements of the time-correlated photon counting detection technique. The tuning range of Stilbene 3 was from 415 to 465 nm. A further extension of the wavelength range is planned by pumping Coumarin 151 (465 -520 nm) and a mixture of Stilbene 3 and Coumarin 7 (495 - 570 nm) using the same pump laser source.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Arie van Hoek and Antonie J. W. G. Visser "Cw dye laser synchronously pumped by the third harmonic of a modelocked cw Nd:YLF laser for tunable blue and green excitation and picosecond time-correlated photon counting detection", Proc. SPIE 1640, Time-Resolved Laser Spectroscopy in Biochemistry III, (1 April 1992); https://doi.org/10.1117/12.58281
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