Arbitrary pulse shaping in high peak power fiber lasers
AssigneeV-Gen Ltd.
InventorsDoron Barness, Eitan Emanuel Rowen, Jacob Lasri, Eran Inbar, Eran Tal
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Abstract
Seeder for use with a fiber laser for generating an arbitrary shaped pulse, comprising an amplified spontaneous emission (ASE) source, a spectral filter and an arbitrary waveform generator (AWG) modulator, the ASE source for generating a continuous wave (CW) broadband pulse, the spectral filter being coupled with the ASE source for narrowing the CW broadband pulse, and the AWG modulator being coupled with the spectral filter for shaping the narrowed CW broadband pulse to an arbitrary pulse shape.
Claims21
Seeder for use with a fiber amplifier, the seeder being, for generating a shaped pulse having an increased Stimulated Brillouin Scattering (SBS) threshold, said shaped pulse can be used to generate high energy laser pulses, comprising:
- an amplified spontaneous emission (ASE) source, for generating a broadband continuous wave (CW) light having a continuous spectral distribution comprising a plurality of frequencies, each one of said plurality of frequencies carrying a fraction of the energy of said broadband CW light;
- a spectral filter, coupled with said ASE source, for narrowing a bandwidth of said broadband CW light while maintaining said continuous spectral distribution within said narrowed bandwidth;
- and
- an arbitrary waveform generator (AWG) modulator, coupled with said spectral filter, for shaping said narrowed bandwidth broadband CW light in a controlled manner to a pulse shape having a gradually rising edge,
- wherein said continuous spectral distribution of said narrowed bandwidth broadband CW light enables said pulse shape to have said increased SBS threshold.
Fiber laser for to generating high energy laser pulses, comprising:
- a seeder, for generating a shaped pulse having an increased Stimulated Brillouin Scattering (SBS) threshold;
- and
- at least one amplifier, coupled with said seeder, for amplifying said shaped pulse to a high energy laser pulse,
- said seeder comprising:
- an amplified spontaneous emission (ASE) source, for generating a broadband continuous wave (CW) light having a continuous spectral distribution comprising a plurality of frequencies, each one of said plurality of frequencies carrying a fraction of the energy of said broadband CW light;
- a spectral filter, coupled with said ASE source, for narrowing a bandwidth of said broadband CW light while maintaining said continuous spectral distribution within said narrowed bandwidth;
- and
- an arbitrary waveform generator (AWG) modulator, coupled with said spectral filter, for shaping said narrowed bandwidth broadband CW light in a controlled manner to a pulse shape having a gradually rising edge,
- wherein said continuous spectral distribution of said narrowed bandwidth broadband CW light enables said pulse shape to have said increased SBS threshold.
Dependencies are inferred from the claim text.