Efficient generation of femtosecond millijoule pulses at 3.1 µm

Zhou, Fangjie; Wu, Yi; Marra, Alphonse; Chang, Zenghu

doi:10.1364/ol.474741

Cited by 6 publications

(1 citation statement)

References 26 publications

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“…Pumped by a Ho:YLF laser at 2-µm, this OPCPA reduces the quantum defect by two times as compared to 1-µm-pumped OPCPAs and results in a 17.5% overall conversion efficiency, which is the highest at this wavelength. The configuration of the OPCPA is shown in Figure 1 [5]. Both the seed and the pump start from a 14-pass Ti:Sapphire chirped pulse amplifier (CPA).…”

Section: Introductionmentioning

confidence: 99%

Efficient generation of femtosecond multi-mJ pulses at 3 µm

Zhou

Marra

et al. 2023

Nonlinear Frequency Generation and Conversion: Materials and Devices XXII

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A tabletop optical parametric chirped pulse amplification (OPCPA) system is developed based on ZnGeP2 crystals to generate 3.2-mJ, 92-fs pulses centered at 3.1 μm, operating at 1 kHz. Pumped by a 2-μm chirped pulse amplifier (CPA) with a top-hat beam profile, the amplifier achieves a 16.5% overall efficiency, which is the highest efficiency achieved by OPCPA at this wavelength. The spectral bandwidth of the pulse can be further broadened by converting the OPCPA to a non-collinear configuration.

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Section: Introductionmentioning

confidence: 99%

Efficient generation of femtosecond multi-mJ pulses at 3 µm

Zhou

Marra

et al. 2023

Nonlinear Frequency Generation and Conversion: Materials and Devices XXII

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Dual-chirped optical parametric amplification of high-energy single-cycle laser pulses

Xu,

Takahashi

2023

Nat. Photon.

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We demonstrate how a scheme called advanced dual-chirped optical parametric amplification (DC-OPA) that employs two kinds of nonlinear crystal (BiB3O6 and MgO-doped lithium niobate) can generate high-energy, single-cycle mid-infrared laser pulses. In experiments, the advanced DC-OPA scheme achieved carrier-to-envelope phase-stable mid-infrared laser pulses with a bandwidth of over one octave (1.4–3.1 µm) and 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 a 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 mid-infrared laser pulses. Moreover, owing to the energy scalability of the advanced DC-OPA scheme, the prospects of the multi-terawatt sub-cycle laser pulses are discussed.

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