An optical fiber integrated device for nonlinear generation of femtosecond mid-infrared pulses DOI
Hannes Kempf,

Matthias Hagner,

Philipp Sulzer

et al.

Applied Physics Letters, Journal Year: 2024, Volume and Issue: 124(26)

Published: June 24, 2024

Compact and broadband mid-infrared (MIR) sources are in high demand because of a wide range potential applications such as molecular sensing the fingerprint region. The generation coherent MIR radiation at arbitrary frequencies typically requires nonlinear mixing between least two input waves, which is often cumbersome to implement. We present an integrated and, therefore, adjustment-free solution combining few-femtosecond pulse compression germanosilicate optical fiber rectification. To this end, 16-μm-thin GaSe crystal directly mounted on end facet highly assembly exploiting focused ion beam. With pulses minute energy 5 nJ duration 120 fs telecom wavelength 1.55 μm, we obtain ultrabroadband phase-stable output transients. Electro-optic sampling free space reveals single-cycle with spectral components covering entire from 10 THz.

Language: Английский

Direct sampling of femtosecond electric-field waveforms from an optical parametric oscillator DOI Creative Commons
Hannes Kempf,

Andrey Muraviev,

Felix Breuning

et al.

APL Photonics, Journal Year: 2024, Volume and Issue: 9(3)

Published: March 1, 2024

Detecting the electric-field waveform of an optical pulse from terahertz to visible spectral domain provides a complete characterization average field and holds great potential for quantum optics, time-domain (including frequency-comb) spectroscopy, high-harmonic generation, attosecond science, name few. The field-resolved measurements can be performed using electro-optic sampling, where laser is characterized through interaction with another much shorter duration. measured train must consist identical pulses, including their equal carrier-envelope phase (CEP). Due limited coverage broadband gain media, creating CEP-stable trains in mid-infrared typically requires nonlinear frequency conversion, such as difference parametric amplification, or rectification. These techniques operate single-pass geometry, often limiting efficiency. In this work, we demonstrate analysis pulses generated resonant system, oscillator (OPO). inherent feedback, device exhibits relatively high conversion efficiency at given level input power. By prove that subharmonic OPO pumped few-cycle fiber-laser generates output. full amplitude information renders dispersion control straightforward. We also confirm existence exotic “flipping” state directly time domain, electric consecutive has opposite sign.

Language: Английский

Citations

3
Low-Noise Femtosecond SESAM Modelocked Diode-Pumped Cr:ZnS Oscillator DOI Creative Commons
Jonas Heidrich, Ajanta Barh, Sandro L. Camenzind

et al.

IEEE Journal of Quantum Electronics, Journal Year: 2023, Volume and Issue: 59(1), P. 1 - 7

Published: Jan. 12, 2023

Cr-doped ZnS and ZnSe are excellent gain mediums for high power broadband ultrashort pulse generation in the 2 – $3~\mu \text{m}$ wavelength range. SESAM modelocked Cr:ZnS oscillators have advantage of reliable, self-starting passive modelocking. We present a diode-pumped, oscillator delivering pulses 189 fs at 550 mW average output with repetition rate 435 MHz low relative intensity noise (RIN) timing jitter. measured an integrated RIN 0.05% within frequency span [10 Hz, 5 MHz] dominated by 1560-nm pump diode, very jitter 10.9 [2 kHz, 10 MHz]. This type laser source benefits not only from but also reduced complexity cost due to direct diode pumping, which is suitable many applications such as spectroscopy, ranging, conversion.

Language: Английский

Citations

7
Sub-cycle pulse revealed with carrier-envelope phase control of soliton self-compression in anti-resonant hollow-core fiber DOI
I. V. Savitsky, A. A. Voronin, E. A. Stepanov

et al.

Optics Letters, Journal Year: 2023, Volume and Issue: 48(17), P. 4468 - 4468

Published: July 31, 2023

The influence of the carrier-envelope phase (CEP) a pump pulse on multioctave supercontinuum (SC) generation in gas-filled anti-resonant hollow-core fiber (AR HCF) by soliton self-compression (SSC) has been explored. We have shown an octave-wide third harmonic (THG) visible-to-near-infrared range during compression down to sub-cycle duration. CEP multi-cycle provides control interference between (TH) and SC that indicates coherent synthesis with duration about 0.4 optical cycles peak power more than 2 GW at output.

Language: Английский

Citations

7
Ultra-phase-stable infrared light source at the watt level DOI

Simon Reiger,

Mikhail Mamaikin,

Dmitrii Kormin

et al.

Optics Letters, Journal Year: 2024, Volume and Issue: 49(4), P. 1049 - 1049

Published: Jan. 23, 2024

Ultrashort pulses at infrared wavelengths are advantageous when studying light–matter interaction. For the spectral region around 2 µm, multi-stage parametric amplification is most common method to reach higher pulse energies. Yet it has been a key challenge for such systems deliver waveform-stable without active stabilization and synchronization systems. Here, we present different approach generation of centered 1.8 µm with watt-level average power utilizing only single nonlinear crystal. Our laser system relies on well-established Yb:YAG thin-disk technology 1.03 wavelength combined hybrid two-stage broadening scheme. We show high-power downconversion process via intra-pulse difference frequency generation, which leads excellent passive stability carrier envelope phase below 20 mrad—comparable modern oscillators. It also provides simple control over central within broad range. The developed source employed generate multi-octave continuum from 500 nm 2.5 opening path toward sub-cycle synthesis extreme waveform stability.

Language: Английский

Citations

2
Mid-infrared ultrafast soliton molecules from a few-cycle Cr:ZnS laser DOI Creative Commons
Xiyue Zhang, Yuchen Wang,

Weibo Wu

et al.

Optics Express, Journal Year: 2024, Volume and Issue: 32(20), P. 35462 - 35462

Published: Sept. 17, 2024

Soliton molecules, or soliton bound states, are envisioned to make far-reaching changes in both fundamental research and applications. Here, we report on the generation precision manipulation of molecules based a Kerr-lens mode-locked single-crystal Cr:ZnS laser at 2.4 µm. In classical regime, self-starting near-transform-limited pulses with duration 37 fs, less than 5 optical cycles, have been obtained repetition frequency 173 MHz an average output power 572 mW. By fine-tuning cavity group-delay dispersion profile, bi-soliton states pulse durations between 55 fs 98 temporal separations 348 604 observed characterized. These shortest separation reported so far mid-infrared region, best our knowledge. With ability generated sub-100-fs timescale, tunable molecule source paves way for applications fields telecommunications ultrafast technologies.

Language: Английский

Citations

2
High-order harmonic generation in orthogonal IR and XUV pulses: XUV-initiated channel separation and polarization control DOI
T. S. Sarantseva, A. A. Romanov, A. A. Silaev

et al.

Physical review. A/Physical review, A, Journal Year: 2023, Volume and Issue: 107(2)

Published: Feb. 22, 2023

Single-atom high-order harmonic generation (HHG) induced by an intense linearly polarized infrared (IR) field and assisted a perturbative extreme ultraviolet (XUV) short pulse with linear polarization is analyzed in perpendicular geometry. It shown that for the case of initial $p$ state, two independent projections laser-induced dipole are formed physical channels, which responsible IR-induced HHG XUV-initiated HHG. This property utilized control generated radiation. An alternative scheme studying proposed.

Language: Английский

Citations

5
In-line synthesis of multi-octave phase-stable infrared light DOI Creative Commons
Hadil Kassab, Sebastian Gröbmeyer,

Wolfgang Schweinberger

et al.

Optics Express, Journal Year: 2023, Volume and Issue: 31(15), P. 24862 - 24862

Published: June 13, 2023

Parametric downconversion driven by modern, high-power sources of 10-fs-scale near-infrared pulses, in particular intrapulse difference-frequency generation (IPDFG), affords combinations properties desirable for molecular vibrational spectroscopy the mid-infrared range: broad spectral coverage, high brilliance, and spatial temporal coherence. Yet, unifying these a robust compact radiation source has remained key challenge. Here, we address this need employing IPDFG multi-crystal in-line geometry, 100-W-level, 10.6-fs pulses 10.6-MHz-repetition-rate, nonlinearly post-compressed Yb:YAG thin-disk oscillator. Polarization tailoring driving using bichromatic waveplate is followed sequence two crystals, LiIO3 LiGaS2, resulting simultaneous coverage 800-cm-1-to-3000-cm-1 range (at -30-dB intensity) with 130 mW average power. We demonstrate that optical-phase coherence maintained theory experiment, latter ultra-broadband electro-optic sampling. These results pave way toward coherent schemes like field-resolved frequency-comb spectroscopy, as well nonlinear, ultrafast optical-waveform synthesis across entire infrared fingerprint region.

Language: Английский

Citations

5
Maximizing the efficiency of intrapulse difference frequency generation by pulse shaping and recycling DOI
Quentin Bournet,

M. Jonusas,

Florent Guichard

et al.

Applied Physics B, Journal Year: 2024, Volume and Issue: 130(2)

Published: Feb. 1, 2024

Language: Английский

Citations

1
Difference‐Frequency Generation of 0.2‐mJ 3‐Cycle 9‐µm Pulses from Two 1‐kHz Multicycle OPCPAs DOI

Xingbin Gu,

Yufang Ding, Zhixuan Hu

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract Intense long‐wave infrared (LWIR) femtosecond pulses within the 8−14 µm atmospheric window present an array of applications, such as in strong‐field physics, ultrafast nonlinear spectroscopy, and self‐guided propagation. However, realization LWIR source capable delivering millijoule‐class energy, few‐cycle duration, kHz repetition rate concurrently remains challenging. Here, via combination different parametric processes is reported, driven by a 1 Yb:YAG thin‐disk laser. The system comprises two parallel multi‐cycle optical chirped‐pulse amplifiers (OPCPAs) operating at 2.3 3.1 µm, respectively, alongside stage ZnGeP 2 ‐crystal‐based difference‐frequency generation (DFG). resulting 9 DFG have record energy 0.21 mJ, 3‐cycle rate, long‐term stability. simultaneous output three synchronized intense lasers short‐wave (2.3 µm), mid‐wave (3.1 (9 µm) renders particularly appealing for multicolor applications.

Language: Английский

Citations

1
Directly diode-pumped femtosecond Cr:ZnS amplifier with ultra-low intensity noise DOI

Shizhen Qu,

Arun Paudel,

Aleksandar Sebesta

et al.

Optics Letters, Journal Year: 2022, Volume and Issue: 47(23), P. 6217 - 6217

Published: Oct. 26, 2022

Diode-pumped Cr:ZnS oscillators have emerged as precursors for single-cycle infrared pulse generation with excellent noise performance. Here we demonstrate a amplifier direct diode-pumping to boost the output of an ultrafast oscillator minimum added intensity noise. Seeded 0.66-W train at 50-MHz repetition rate and 2.4 µm center wavelength, provides over 2.2 W 35-fs pulses. Due low-noise performance laser pump diodes in relevant frequency range, achieves root mean square (RMS) level only 0.03% 10 Hz-1 MHz range long-term power stability 0.13% RMS one hour. The diode-pumped reported here is promising driving source nonlinear compression single- or sub-cycle regime, well bright, multi-octave-spanning mid-infrared pulses ultra-sensitive vibrational spectroscopy.

Language: Английский

Citations

5