Fully stabilized multi-TW optical waveform synthesizer: Toward gigawatt isolated attosecond pulses

Xue, Bing; Tamaru, Yuki; Fu, Yuxi; Yuan, Hua; Lan, Pengfei; Mücke, Oliver D.; Suda, Akira; Midorikawa, Katsumi; Takahashi, Eiji J.

doi:10.1126/sciadv.aay2802

Cited by 44 publications

(16 citation statements)

References 42 publications

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“…Unlike in refs. 50 – 53 , the channels are not parametrically amplified. The synthesizer, nevertheless, provides sufficiently energetic and intense pulses (energy ≈ 5 μJ, peak power ≈ 0.5 GW) for activating strong-field phenomena unfolding at field strengths of the order of 1 V/Å in any type of solids, ranging from wide-gap insulators to semiconductors as well as 2D materials.…”

Section: Resultsmentioning

confidence: 99%

Electro-optic characterization of synthesized infrared-visible light fields

et al. 2022

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The measurement and control of light field oscillations enable the study of ultrafast phenomena on sub-cycle time scales. Electro-optic sampling (EOS) is a powerful field characterization approach, in terms of both sensitivity and dynamic range, but it has not reached beyond infrared frequencies. Here, we show the synthesis of a sub-cycle infrared-visible pulse and subsequent complete electric field characterization using EOS. The sampled bandwidth spans from 700 nm to 2700 nm (428 to 110 THz). Tailored electric-field waveforms are generated with a two-channel field synthesizer in the infrared-visible range, with a full-width at half-maximum duration as short as 3.8 fs at a central wavelength of 1.7 µm (176 THz). EOS detection of the complete bandwidth of these waveforms extends it into the visible spectral range. To demonstrate the power of our approach, we use the sub-cycle transients to inject carriers in a thin quartz sample for nonlinear photoconductive field sampling with sub-femtosecond resolution.

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Section: Resultsmentioning

confidence: 99%

Electro-optic characterization of synthesized infrared-visible light fields

et al. 2022

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“…In this paper, we review our recent work [31] of a multi-TW 10 Hz three-channel parallel parametric waveform 2…”

Section: Introductionmentioning

confidence: 99%

A Custom-Tailored Multi-TW Optical Electric Field for Gigawatt Soft-X-Ray Isolated Attosecond Pulses

Xue

Tamaru

et al. 2021

Ultrafast Sci

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Since the first isolated attosecond pulse was demonstrated through high-order harmonics generation (HHG) in 2001, researchers’ interest in the ultrashort time region has expanded. However, one realizes a limitation for related research such as attosecond spectroscopy. The bottleneck is concluded to be the lack of a high-peak-power isolated attosecond pulse source. Therefore, currently, generating an intense attosecond pulse would be one of the highest priority goals. In this paper, we review our recent work of a TW-class parallel three-channel waveform synthesizer for generating a gigawatt-scale soft-X-ray isolated attosecond pulse (IAP) using HHG. By employing several stabilization methods, we have achieved a stable 50 mJ three-channel optical-waveform synthesizer with a peak power at the multi-TW level. This optical-waveform synthesizer is capable of creating a stable intense optical field for generating an intense continuum harmonic beam thanks to the successful stabilization of all the parameters. Furthermore, the precision control of shot-to-shot reproducible synthesized waveforms is achieved. Through the HHG process employing a loose-focusing geometry, an intense shot-to-shot stable supercontinuum (50–70 eV) is generated in an argon gas cell. This continuum spectrum supports an IAP with a transform-limited duration of 170 as and a submicrojoule pulse energy, which allows the generation of a GW-scale IAP. Another supercontinuum in the soft-X-ray region with higher photon energy of approximately 100–130 eV is also generated in neon gas from the synthesizer. The transform-limited pulse duration is 106 as. Thus, the enhancement of HHG output through optimized waveform synthesis is experimentally proved.

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“…Furthermore, the need for ultra-fast pulses beyond 20 𝜇m has grown in recent decades for strong interactions with quantum materials [8][9][10]. Even more generally the synthesis of light transients of multiple octaves [11][12][13][14] holds many promises, such as the generation of intense table top attosecond pulses [15][16][17][18] or the control and measurement of phase transitions in materials [19]. However, the generation and control of multiple incommensurate waveforms is also of great interest as it can lead to waveform synthesis of multiple octaves [20][21][22], attosecond XUV pulses [23] and tunable IR pulse generation from the LWIR to THz [24] through electronic currents generated in air [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric high energy dual optical parametric amplifier for parametric processes and waveform synthesis

Davis¹,

Saule²,

Trallero–Herrero³

2021

Preprint

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We report on an asymmetric high energy dual optical parametric amplifier (OPA) which is capable of having either the idlers, signals, or depleted pumps, relatively phase locked at commensurate or incommensurate wavelengths. Idlers and signals can be locked on the order of 200 mrad rms or better, corresponding to a 212 as jitter at 𝜆=2 𝜇m. The high energy arm of the OPA outputs a combined 3.5 mJ of signal and idler, while the low energy arm outputs 1.5 mJ, with the entire system being pumped with a 1 kHz, 18 mJ Ti:Sapphire laser. Both arms are independently tunable from 1080 nm-2600 nm. The combination of relative phase locking, high output power and peak intensity, and large tunability makes our OPA an ideal tool for use in difference frequency generation (DFG) in the strong pump regime, and for high peak field waveform synthesis in the near-infrared. To demonstrate this ability we generate terahertz radiation through two color waveform synthesis in air plasma and show the influence of the relative phase on the generated terahertz intensity. The ability to phase lock multiple incommensurate wavelengths at high energies opens the door to a multitude of possibilities of strong pump DFG and waveform synthesis.

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Fully stabilized multi-TW optical waveform synthesizer: Toward gigawatt isolated attosecond pulses

Cited by 44 publications

References 42 publications

Electro-optic characterization of synthesized infrared-visible light fields

Electro-optic characterization of synthesized infrared-visible light fields

A Custom-Tailored Multi-TW Optical Electric Field for Gigawatt Soft-X-Ray Isolated Attosecond Pulses

Asymmetric high energy dual optical parametric amplifier for parametric processes and waveform synthesis

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