Patent
Method and apparatus for generating ultrashort light pulses
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TLDR
In this article, a 5 mJ 25 picosecond second harmonic light pulse from a Nd:YAG laser system is focused into a 5 cm cell filled with D2 O so as to generate a continuum light pulse spanning about 150 nanometers with an average energy of at least 20 nd/nm across the spectrum.Abstract:
A method and apparatus for generating a light pulse having a duration as short as about 3 picoseconds is disclosed A 5 mJ 25 picosecond second harmonic light pulse from a Nd:YAG laser system is focused into a 5 cm cell filled with D2 O so as to generate a continuum light pulse spanning about 150 nanometers with an average energy of at least 20 nd/nm across the spectrum The continuum light pulse is fed through a 10 nanometer narrowband filter centered at 580 nanometers, producing an output pulse having a duration of about 3 picoseconds The pulse so produced has a number of uses including as a seed pulse for dye laser oscillators and solid state amplifiers or as a pump source for pumping ultrashort dye lasersread more
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References
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Dispersion compensated fiber Raman oscillator
TL;DR: In this article, a dispersion compensation delay line is added to a synchronously pumped fiber Raman ring oscillator to generate sub-picosecond pulses, and an interference filter is used as a bandwidth limiting tuning element to provide a good quality short pulse.
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Broadly tunable picosecond IR source
TL;DR: In this paper, a picosecond traveling-wave parametric device capable of controlling spectral bandwidth and wavelength in the infrared is reported, which is based on a diffraction grating and mirror arrangement.
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Picosecond broadband cars probe using the picosecond continuum
TL;DR: In this paper, a coherent anti-Stokes Raman spectroscopy (CARS) method and apparatus for producing a broadband CARS vibrational spectrum of a sample in a single picosecond laser pulse are presented.
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Apparatus and systems using broad band radiation pulse source
TL;DR: In this paper, a mode-locked laser pulse is passed through high Raman coefficient media in which a variety of Stokes and anti-Stokes frequency transitions result, and the exiting pulse, which may have an envelope of the same order of magnitude time duration, contains a virtual continuum of wavelengths.
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Infrared pulse compression
TL;DR: In this article, the authors used a TE/CO2 multi-atmosphere gain module with sodium chloride windows amplified and shortened the optical pulse during successive passes through the module.