US 12,451,662 B2
Ultrashort pulse laser source with chirped pulse amplification and tailored pulse train
Alex Yusim, Boston, MA (US); Igor Samartsev, Westborough, MA (US); Manuel J. Leonardo, Marlboro, MA (US); Vadim Smirnov, Orlando, FL (US); Pankaj Kadwani, Shrewsbury, MA (US); Alexey Avdokhin, Southborough, MA (US); and Andreas Vaupel, Longmeadow, MA (US)
Assigned to IPG PHOTONICS CORPORATION, Marlborough, MA (US)
Appl. No. 17/427,135
Filed by IPG PHOTONICS CORPORATION, Oxford, MA (US)
PCT Filed Jan. 31, 2020, PCT No. PCT/US2020/016121
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2020/160415, PCT Pub. Date Aug. 6, 2020.
Claims priority of provisional application 62/864,834, filed on Jun. 21, 2019.
Claims priority of provisional application 62/799,492, filed on Jan. 31, 2019.
Prior Publication US 2022/0149579 A1, May 12, 2022
Int. Cl. H01S 3/00 (2006.01); H01S 3/067 (2006.01); H01S 3/10 (2006.01); H01S 3/1106 (2023.01); H01S 3/1112 (2023.01)
CPC H01S 3/0057 (2013.01) [H01S 3/005 (2013.01); H01S 3/0092 (2013.01); H01S 3/06758 (2013.01); H01S 3/06791 (2013.01); H01S 3/10046 (2013.01); H01S 3/1112 (2013.01); H01S 3/06704 (2013.01); H01S 3/06745 (2013.01); H01S 3/1121 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A fiber-based laser system comprising:
a mode-locked laser source configured to provide an input train of input pulses having an initial pulse duration of less than one nanosecond and a pulse repetition rate of at least one MHz;
an optical pulse stretcher optically coupled to the mode-locked laser source and configured to stretch pulse durations of the input train of input pulses to produce a train of stretched laser pulses;
a pulse replicator module optically coupled to the optical pulse stretcher and configured to increase a pulse repetition rate of the train of stretched laser pulses to produce a modified pulse train of laser light;
a fiber power amplifier optically coupled to the pulse replicator module and configured to amplify the modified pulse train to produce amplified laser pulses, the amplified laser pulses having a peak-average-power ratio of less than 30; and
a pulse compressor optically coupled to the fiber power amplifier and configured to temporally compress the amplified laser pulses to produce amplified and compressed laser pulses.