Femtosecond time-resolved multi-channel lock-in fluorescence spectrometer based on optical parametric amplification
A technology of optical parameter amplification and fluorescence spectrometer, which is applied in the direction of fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of hyperfluorescence spectrum difference, hyperfluorescence spectrum intensity difference, and inability to accurately deduct hyperfluorescence background, etc., to achieve compact structure, The effect of reducing sample photodamage, improving dynamic range and detection sensitivity
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[0032] The present invention provides as attached figure 2 The femtosecond time-resolved multi-channel phase-locked fluorescence spectrometer based on optical parametric amplification mainly includes the following parts:
[0033] 1) The laser light source 201 is a titanium-sapphire femtosecond regenerative amplification system (the center wavelength is around 800nm, the pulse repetition frequency is 1kHz, the single pulse energy is greater than 300uJ, and the pulse width is about 100fs).
[0034] 2) The beam splitter 202 has a transmittance and reflectance ratio of 1:1 for the 800 nm beam, and is used to divide the laser light output by the laser light source 1 into a transmitted beam and a reflected beam.
[0035] 3) The sample excitation light part, located in the optical path of the above-mentioned transmitted beam, includes a non-collinear optical parametric amplifier (NOPA) 203, a frequency multiplier (SHG) 204 and a filter 205, of which the non-collinear op...
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