Near-single-cycle long-wave infrared pulses for coherent linear and nonlinear optics

Kowligy, Abijith S.; Timmers, Henry; Lind, Alex; Karlen, Sylvain; Cruz, Flávio C.; Schunemann, Peter G.; Biegert, Jens; Diddams, Scott A.

doi:10.1364/cleo_si.2019.sth4e.5

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…We combine two ideas: the first one concerns the generation process, the second one concerns an additional simple amplifier. Concerning the generation, (3) [24]; (4) [25]; (5) [26]; (6) [27]; (7)[28] (8) [29]; (9) [24]; (10) [30]; (11) [31]; (12) [32]; (13) [23].…”

Section: The Bottleneck Of Idfg Efficiencymentioning

confidence: 99%

Maximizing the efficiency of intrapulse difference frequency generation by pulse shaping and recycling

Bournet,

Jonusas,

Guichard

et al. 2024

Appl. Phys. B

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Intrapulse Difference Frequency Generation (iDFG) is an interesting technique for generating femtosecond pulses in the Mid-Infrared (MIR) range with unique properties such as robust Carrier-Envelope Phase (CEP) stability. However, its efficiency is low compared to other techniques. In this paper, we describe an iDFG system operating within the 4 to 10 µm range that features an original architecture to enhance efficiency. First, we introduce an innovative technique on the generation process. This approach involves polarization and spectral phase shaping techniques on the driving pulse to maximize the number of photons enrolled in the process. Second, we demonstrate that the polarization shaping allows further enhancement of efficiency by recycling the iDFG signal to pump a subsequent optical parametric amplification (OPA) stage. These two concepts and the associated parameters optimization are described into details, and supported by experimental results. Combined with a high-power Yb-fiber-based pump laser, these techniques allow to achieve record efficiencies, and generate µJ-level, fewcycle, tunable, CEP-stable pulses in the MIR at repetition rates above 100 kHz.

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Section: The Bottleneck Of Idfg Efficiencymentioning

confidence: 99%

Maximizing the efficiency of intrapulse difference frequency generation by pulse shaping and recycling

Bournet,

Jonusas,

Guichard

et al. 2024

Appl. Phys. B

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show abstract

“…The residual pump and signal lights are blocked by a long-pass filter (F) with a 4.5 µm cut-on wavelength, meaning that only MIR pulses can travel through it. In recent years, the intrapulse difference frequency generation method (IDFG, also known as optical rectification) has become a new method to generate MIR laser source owning to its simplicity and phase stability [118][119][120][121][122][123][124][125][126][127][128][129][130][131][132][133][134][135]. The coherent femtosecond-level pulses with a wavelength range covering the whole MIR region are successively realized through IDFG.…”

Section: Experimental Study Of Long-wavelength Mid-infrared Laser Sou...mentioning

confidence: 99%

“…Studies on the generation of ultrafast MIR sources above 8 µm based on DFG and IDFG[118][119][120][121][122][123][124][125][126][127][128][129][130][131][132][133][134][135].…”

mentioning

confidence: 99%

Generation of 8–20 μm Mid-Infrared Ultrashort Femtosecond Laser Pulses via Difference Frequency Generation

Zhu

Wang

et al. 2022

Photonics

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Mid-infrared (MIR) ultrashort laser pulses have a wide range of applications in the fields of environmental monitoring, laser medicine, food quality control, strong-field physics, attosecond science, and some other aspects. Recent years have seen great developments in MIR laser technologies. Traditional solid-state and fiber lasers focus on the research of the short-wavelength MIR region. However, due to the limitation of the gain medium, they still cannot cover the long-wavelength region from 8 to 20 µm. This paper summarizes the developments of 8–20 μm MIR ultrafast laser generation via difference frequency generation (DFG) and reviews related theoretical models. Finally, the feasibility of MIR power scaling by nonlinear-amplification DFG and methods for measuring the power of DFG-based MIR are analyzed from the author’s perspective.

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On the efficiency of Intrapulse Difference Frequency Generation MIR systems

Bournet,

Jonusas,

Guichard

et al. 2023

Preprint

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Intrapulse Difference Frequency Generation (iDFG) is an interesting technique for generating femtosecond pulses in the Mid-Infrared (MIR) range with unique properties such as robust Carrier-Envelope Phase (CEP) stability. However, its efficiency is low compared to other techniques. In this paper, we describe an iDFG system operating within the 4 to 10 µm range that features an original architecture to enhance efficiency. First, we introduce an innovative technique on the generation process. This approach involves polarization and spectral phase shaping techniques on the driving pulse to maximize the number of photons enrolled in the process. Second, we demonstrate that the polarization shaping allows further enhancement of efficiency by recycling the iDFG signal to pump a subsequent optical parametric amplification (OPA) stage. These two concepts and the associated parameters optimization are described into details, and supported by experimental results. Combined with a high-power Yb-fiber-based pump laser, these techniques allow to achieve record efficiencies, and generate µJ-level, few-cycle, tunable, CEP-stable pulses in the MIR at repetition rates above 100 kHz.

show abstract

Near-single-cycle long-wave infrared pulses for coherent linear and nonlinear optics

Cited by 3 publications

References 7 publications

Maximizing the efficiency of intrapulse difference frequency generation by pulse shaping and recycling

Maximizing the efficiency of intrapulse difference frequency generation by pulse shaping and recycling

Generation of 8–20 μm Mid-Infrared Ultrashort Femtosecond Laser Pulses via Difference Frequency Generation

On the efficiency of Intrapulse Difference Frequency Generation MIR systems

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