US 9,812,839 B2
Arbitrary pulse shaping in high peak power fiber lasers
Doron Barness, Kiryat Ono (IL); Eitan Emanuel Rowen, Modiin (IL); Jacob Lasri, Hod Hasharon (IL); Eran Inbar, Tel-Aviv (IL); and Eran Tal, Petach Tikva (IL)
Assigned to V-Gen Ltd., (IL)
Filed by Doron Barness, Kiryat Ono (IL); Eitan Emanuel Rowen, Modiin (IL); Jacob Lasri, Hod Hasharon (IL); Eran Inbar, Tel-Aviv (IL); and Eran Tal, Petach Tikva (IL)
Filed on Mar. 3, 2015, as Appl. No. 14/636,635.
Claims priority of provisional application 61/946,920, filed on Mar. 3, 2014.
Prior Publication US 2015/0249316 A1, Sep. 3, 2015
Int. Cl. H01S 3/067 (2006.01); H01S 3/0933 (2006.01); H01S 3/10 (2006.01); H01S 3/094 (2006.01); H01S 3/06 (2006.01); H01S 3/00 (2006.01)
CPC H01S 3/10084 (2013.01) [H01S 3/0057 (2013.01); H01S 3/0623 (2013.01); H01S 3/06754 (2013.01); H01S 3/0933 (2013.01); H01S 3/094023 (2013.01); H01S 3/094042 (2013.01); H01S 3/094076 (2013.01); H01S 3/094088 (2013.01); H01S 3/10023 (2013.01); H01S 3/0078 (2013.01); H01S 2301/03 (2013.01)] 21 Claims
OG exemplary drawing
 
13. 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.