Sub-cycle millijoule-level parametric waveform synthesizer for attosecond science

Rossi, Giulio Maria; Mainz, Roland E.; Yang, Yudong; Scheiba, Fabian; Silva‐Toledo, Miguel A.; Chia, Shih Hsuan; Keathley, Phillip D.; Fang, Shaobo; Mücke, Oliver D.; Manzoni, Cristian; Cerullo, Giulio; Cirmi, Giovanni; Kärtner, Franz X.

doi:10.1038/s41566-020-0659-0

Cited by 96 publications

(47 citation statements)

References 46 publications

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“…Single-shot probing the time separation and relative phase of the pulse from adjacent roundtrips suggests the applications for DTI on frequency comb, femtosecond pulse synchronization, precise timing, and few-cycle pulse generation. In these areas, the popular method on the feedback control is based on the measurement of repetition frequency and/or the f-to-2f method 40 , both of which can only access time-averaged signals. The DTI makes it possible to single-shot monitor the repetition frequency and the phase jitter of mode-locked pulse.…”

Section: Discussionmentioning

confidence: 99%

Time-resolved single-shot revealing pulse evolution dynamics in ultrafast lasers

Xian¹,

Wang²,

Zhan³

2021

Preprint

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Mode-locked lasers are the ideal source for precise measurements, from frequency combs to precise timing, which relies on the accurate control of the intracavity parameters in the lasers to stabilize the pulse. However, by the lack of accurate measurements, the interplays between intracavity parameters and the mode-locked pulse is still not real-time observable. Here, using the dispersive temporal interferometer, we report a method to single-shot probe the pulse evolution dynamics in time domain in the mode-locked laser. As a typical example, we demonstrate the first single-shot observation on the roundtrip time and phase evolutions of intracavity pulse during its buildup and relaxation. Three distinct evolution regimes for pulse buildup are unveiled for the first time. Moreover, the physical mechanism of the time-location and phase changes in these three regimes has also been analyzed, respectively. Our researches present a novel method to observe the intracavity-parameters-to-pulse interaction, which will improve laser design, ultrafast diagnostics, and nonlinear optics.

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Section: Discussionmentioning

confidence: 99%

Time-resolved single-shot revealing pulse evolution dynamics in ultrafast lasers

Xian¹,

Wang²,

Zhan³

2021

Preprint

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“…The self-compressed pulses we have demonstrated here extend this concept to the infrared. Infrared subcycle transients have previously been created by the interference of a few-cycle pulse with its second harmonic [29] and in a two-channel synthesizer configuration [30], but further compression to attosecond duration has not been demonstrated with those techniques. The capability of generating infrared attosecond pulses we demonstrate here holds great promise, for instance, in the study of solid-state strong-field physics [31].…”

Section: Discussionmentioning

confidence: 99%

Infrared attosecond field transients and UV to IR few-femtosecond pulses generated by high-energy soliton self-compression

Brahms

Belli

Travers

2020

Phys. Rev. Research

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Infrared femtosecond laser pulses are important tools both in strong-field physics, driving x-ray high-harmonic generation, and as the basis for widely tunable, if inefficient, ultrafast sources in the visible and ultraviolet. Although anomalous material dispersion simplifies compression to few-cycle pulses, attosecond pulses in the infrared have remained out of reach. We demonstrate soliton self-compression of 1800-nm laser pulses in hollow capillary fibers to subcycle envelope duration (2 fs) with 27-GW peak power, corresponding to attosecond field transients. In the same system, we generate wavelength-tunable few-femtosecond pulses from the ultraviolet (300 nm) to the infrared (740 nm) with energy up to 25 μJ and efficiency up to 12%, and experimentally characterize the generation dynamics in the time-frequency domain. A compact second stage generates multimicrojoule pulses from 210 to 700 nm using less than 200 μJ of input energy. Our results significantly expand the toolkit available to ultrafast science.

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“…Среда будет возбуждаться парой импульсов (1) с длительностью порядка 1 fs с интервалом между ними T d = π ω 0 = T 0 2 = 333 fs, равным половине периода колебаний осциллятора, чтобы возник импульс остановленной поляризации среды, наводимый первым импульсом и останавливаемой вторым импульсом. Недавно экспериментально были получены полупериодные импульсы с длительностью порядка 0.3−2 fs [25,26]. Именно такой диапазон длительностей будет использован нами в дальнейшем в численных расчетах.…”

Section: схема получения тгц импульса и описание теоретической моделиunclassified

“…Подобные полупериодные квазиуниполярные импульсы содержат выраженный всплеск поля одной полярности и слабый хвост противоположной полярности. Они получаются в оптическом и УФ диапазонах за счет фурье-синтеза частот накачки [25,26] или торможения релятивистских электронов при столкновении с тонкой мишенью [27,28], а также в ТГц диапазоне [1][2][3][4]. На сегодняшний день уже не вызывает сомнения возможность использования униполярных импульсов для эффективного управления движениями зарядов в веществе, так как они способны оказывать однонаправленное воздействие на заряженные частицы [29].…”

Section: Introductionunclassified

Генерация Предельно Коротких Импульсов Терагерцового Излучения На Основе Сверхизлучения Трехуровневой Резонансной Среды

Архипов¹,

Розанов²

2021

Оптика И Спектроскопия

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The possibility of generating extremely short pulses of terahertz (THz) radiation due to superradiance - collective spontaneous emission of stopped polarization of a thin layer of a three-level resonant medium excited by a pair of attosecond (or femtosecond) pulses is studied theoretically. The source of a terahertz pulse is a pulse of stopped nonlinear polarization of the medium, which occurs in the interval between its excitation and de-excitation. The case of a three-level medium with equidistant energy levels (as in a quantum harmonic oscillator), the transition frequency of which lies in the THz range, is considered. The influence of the populations of the excited levels of the medium on the shape of the terahertz superradiance pulse is discussed.

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Sub-cycle millijoule-level parametric waveform synthesizer for attosecond science

Cited by 96 publications

References 46 publications

Time-resolved single-shot revealing pulse evolution dynamics in ultrafast lasers

Time-resolved single-shot revealing pulse evolution dynamics in ultrafast lasers

Infrared attosecond field transients and UV to IR few-femtosecond pulses generated by high-energy soliton self-compression

Генерация Предельно Коротких Импульсов Терагерцового Излучения На Основе Сверхизлучения Трехуровневой Резонансной Среды

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