Efficient and scalable scheme for overcoming the pulse energy bottleneck of single-cycle laser sources
arXiv (Cornell University)(2023)
摘要
We propose a novel scheme called advanced dual-chirped optical parametric
amplification (DC-OPA) that employs two kinds of nonlinear crystals
(BiB_3O_6 and MgO-doped lithium niobate) to overcome the bottleneck of
pulse energy scalability for single-cycle mid-infrared (MIR) laser pulses. In
experiments, the advanced DC-OPA scheme achieved carrier-to-envelope
phase-stable MIR laser pulses for a bandwidth of over one octave (1.4-3.1
μm) with an output pulse energy of 53 mJ. The pulse duration was compressed
to 8.58 fs, which corresponds to 1.05 cycles with a central wavelength of 2.44
μm and peak power of 6 TW. To our knowledge, the obtained values for the
pulse energy and peak power are the highest achieved for optical parametric
amplification of single-cycle MIR laser pulses. Thanks to the energy
scalability of the advanced DC-OPA scheme, it is potentially applicable to
multi-TW sub-cycle laser pulses.
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关键词
pulse energy bottleneck
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