Production of tuneable picosecond light pulses in a visible spectral range
First Claim
1. Device for the production of tuneable picosecond light pulses in the visible spectral range, having a laser system (LS) that emits femtosecond light pulses in the infrared spectral range, and having an optical frequency converter (FC) for converting the wavelengths of the light pulses into the visible spectral range, wherein the wavelength of the light pulses emitted by the laser system (LS) can be tuned, whereby the conversion of the wavelength of the light pulses by means of the frequency converter takes place in such a manner that the wavelength of the light pulses in the visible spectral range can be tuned, whereby an optical stretcher (OS) is provided, by means of which the pulse duration of the frequency-converted light pulses can be increased to at least 1 ps.
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Abstract
The invention relates to a device for the production of tuneable light impulses in a visible spectral range, comprising a laser system (LS) which emits femtosecond light impulses in the infrared spectral range, and an optical frequency converter (FC) for converting the wave lengths of the light impulses into the visible spectral range. According to the invention, the wave length of the light impulse emitted by the laser system can be tuned in order to provide said type of device which can be used as a light source for time-resolved fluorescence spectroscopy. Said device also comprises an optical stretcher which enables the duration of the impulse of the frequency converted light impulse to be increased to at least 1 ps.
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14 Claims
- 1. Device for the production of tuneable picosecond light pulses in the visible spectral range, having a laser system (LS) that emits femtosecond light pulses in the infrared spectral range, and having an optical frequency converter (FC) for converting the wavelengths of the light pulses into the visible spectral range, wherein the wavelength of the light pulses emitted by the laser system (LS) can be tuned, whereby the conversion of the wavelength of the light pulses by means of the frequency converter takes place in such a manner that the wavelength of the light pulses in the visible spectral range can be tuned, whereby an optical stretcher (OS) is provided, by means of which the pulse duration of the frequency-converted light pulses can be increased to at least 1 ps.
Specification