Versatile few-cycle high-energy MID-IR OPCPA for nonlinear optics, spectroscopy and imaging DOI Creative Commons
M.N. Namboodiri, Cheng Luo, Gregor Indorf

и другие.

Optics Continuum, Год журнала: 2022, Номер 1(5), С. 1157 - 1157

Опубликована: Апрель 11, 2022

High-power, high-energy, ultrashort, mid-infrared (MID-IR) laser systems operating at high repetition rates are of considerable interest for many science applications, such as coherent vibrational spectroscopy, label-free imaging, time-resolved pump-probe and high-harmonic generation studies. We developed an optical parametric chirped-pulse amplifier (OPCPA) system employing a difference-frequency in lithium gallium sulfide nonlinear crystal the final stage, which provides principle possibility passive carrier-envelop-phase (CEP) stability. The OPCPA efficiently down-converts 1 μ m 200 J Yb-YAG pump pulse into MID-IR spectral range generating J-level pulses rate kHz. Two modes operations providing complimentary properties presented. Depending on envisaged application, one can switch between (a) wavelength-tunable (4.2–11 m) source (b) broadband centered ≈8.5 by controlling group-delay dispersion signal pulse. broadband, high-energy have short duration 74±2 fs, corresponds to only ≈3 cycles central wavelength 8.5 m.

Язык: Английский

Barium nonlinear optical crystals for the mid-IR: characterization and some applications DOI
Valentin Petrov, Valeriy Badikov, Dmitrii Badikov

и другие.

Journal of the Optical Society of America B, Год журнала: 2021, Номер 38(8), С. B46 - B46

Опубликована: Июнь 16, 2021

The linear and nonlinear optical properties of B mathvariant="normal">a mathvariant="normal">G 4 mathvariant="normal">S 7 , mathvariant="normal">e 2 6 are reviewed, highlighting their potential for frequency downconversion powerful laser sources from the near- to mid-IR. Examples successful applications summarized briefly discussed.

Язык: Английский

Процитировано

53
Barium Chalcogenide Crystals: A Review DOI Creative Commons
Nadezhda Y. Kostyukova, E. Yu. Erushin,

Аndrey А. Boyko

и другие.

Photonics, Год журнала: 2024, Номер 11(3), С. 281 - 281

Опубликована: Март 21, 2024

In recent decades, new nonlinear optical materials have been actively developed to create coherent tunable light sources in the mid-infrared (mid-IR) part of spectrum used a variety scientific fields. present review, main attention is focused on barium chalcogenide crystals, including their linear and properties, laser-induced damage threshold (LIDT), frequency down-conversion.

Язык: Английский

Процитировано

8
Long seed, short pump: converting Yb-doped laser radiation to multi-µJ few-cycle pulses tunable through 2.5–15 µm DOI Creative Commons
Rimantas Budriūnas,

Karolis Jurkus,

Mikas Vengris

и другие.

Optics Express, Год журнала: 2022, Номер 30(8), С. 13009 - 13009

Опубликована: Март 17, 2022

We present a setup for generating broadband (up to 1050 cm-1) and broadly tunable (2.5-15 µm) mid-infrared pulses using an Yb-doped femtosecond laser as the pump source. Our scheme, comprising two parametric amplifiers mixing stage, exploits favorable group velocity matching conditions in GaSe pumped at 2 µm directly produce sub-70 fs throughout tuning range without any additional dispersion compensation, while 30-50 pulse durations are achieved with simple compensation by propagation through thin bulk media. The generated have sub-1% short- long-term energy noise, well stable spectral parameters, delivering 0.5-2 W average mid-IR power. expect source be useful various spectroscopic applications mid-IR.

Язык: Английский

Процитировано

27
Ultrabroad (3.7–17 µm) tunable femtosecond optical parametric amplifier based on BaGa4Se7 crystal DOI

Kan Tian,

Weizhe Wang,

chunxiao li

и другие.

Optics Letters, Год журнала: 2022, Номер 47(22), С. 5973 - 5973

Опубликована: Окт. 26, 2022

We demonstrate the first (to best of our knowledge) tunable femtosecond (fs) mid-infrared (MIR) optical parametric amplifier (OPA) based on BaGa4Se7 (BGSe) crystal with an ultra-broadband spectral range. Benefiting from broad transparency range, high nonlinearity, and relatively large bandgap BGSe, MIR OPA pumped at 1030 nm a repetition 50 kHz has output spectrum that is across extremely wide range spanning 3.7 to 17 µm. The maximum power laser source measured as 10 mW center wavelength 16 µm, corresponding quantum conversion efficiency 5%. Power scaling straightforwardly achieved by using stronger pump in BGSe available aperture size. A pulse width 290 fs centered µm supported OPA. Our experimental result indicates could serve promising nonlinear for generation tuning via downconversion applications such ultrafast spectroscopy.

Язык: Английский

Процитировано

22
Mid-Infrared Few-Cycle Pulse Generation and Amplification DOI Creative Commons

Kan Tian,

Linzhen He,

Xuemei Yang

и другие.

Photonics, Год журнала: 2021, Номер 8(8), С. 290 - 290

Опубликована: Июль 21, 2021

In the past decade, mid-infrared (MIR) few-cycle lasers have attracted remarkable research efforts for their applications in strong-field physics, MIR spectroscopy, and bio-medical research. Here we present a review of pulse generation amplification wavelength range spanning from 2 to ~20 μm. first section, brief introduction on importance ultrafast corresponding methods is provided. second different nonlinear crystals including emerging non-oxide crystals, such as CdSiP2, ZnGeP2, GaSe, LiGaS2, BaGa4Se7, well new periodically poled OP-GaAs OP-GaP are reviewed. Subsequently, third various techniques optical parametric amplification, chirped-pulse intra-pulse difference-frequency with all sorts designs, pumped by miscellaneous lasers, output specifications terms energy, average power, width addition, high-energy single-cycle pulses ideal tools isolated attosecond generation, electron dynamic investigation, tunneling ionization harness. Thus, fourth examples state-of-the-art work field reviewed discussed. last prospects high-fidelity molecule detection, cold tissue ablation

Язык: Английский

Процитировано

27
Efficient generation of few-cycle pulses beyond 10 μm from an optical parametric amplifier pumped by a 1-µm laser system DOI Creative Commons
Zsuzsanna Heiner, Valentin Petrov,

Vladimir L. Panyutin

и другие.

Scientific Reports, Год журнала: 2022, Номер 12(1)

Опубликована: Март 24, 2022

Nonlinear vibrational spectroscopy profits from broadband sources emitting in the molecular fingerprint region. Yet, lasers operating at wavelengths above 7 μm have been lacking, while traditional cascaded parametric frequency down-conversion schemes suffer exceedingly low conversion efficiencies. Here we present efficient, direct of femtosecond 100-kHz, 1.03-μm pulses to mid-infrared 7.5 13.3 a supercontinuum-seeded, tunable, single-stage optical amplifier based on wide-bandgap material Cd0.65Hg0.35Ga2S4. The delivers near transform-limited, few-cycle with an average power > 30 mW center between 8.8 and 10.6 μm, efficiencies far surpassing that amplification followed by difference-frequency generation or intrapulse generation. pulse duration is 101 fs corresponding 2.9 cycles spectral coverage 760-1160 cm-1. CdxHg1-xGa2S4 attractive alternative LiGaS2 BaGa4S7 small-scale, Yb-laser-pumped, amplifiers offers much higher nonlinear figure merit compared those materials. Leveraging inherent spatial variation composition CdxHg1-xGa2S4, approach proposed give access significant fraction region using single crystal fixed phase matching angle.

Язык: Английский

Процитировано

18
Barium chalcogenides for nonlinear optics in the mid-IR: Properties and applications DOI Creative Commons
Valentin Petrov, Kiyoshi Katō, Kentaro Miyata

и другие.

Optical Materials X, Год журнала: 2024, Номер 22, С. 100319 - 100319

Опубликована: Апрель 16, 2024

The essential properties of BaGa4S7 (BGS), BaGa4Se7 (BGSe), BaGa2GeS6 (BGGS), BaGa2GeSе6 (BGGSe), and Ba2Ga8GeS16 (B2GGS) are reviewed, together with all nonlinear optical applications these non-centrosymmetric crystals realized so far.

Язык: Английский

Процитировано

4
Broadly tunable mid-infrared femtosecond pulses directly generated by an optical parametric amplifier DOI Creative Commons
Andrea Villa, Aaron M. Ross, Riccardo Gotti

и другие.

OSA Continuum, Год журнала: 2021, Номер 4(11), С. 2837 - 2837

Опубликована: Окт. 25, 2021

We introduce an optical parametric amplifier, pumped by amplified femtosecond Yb:KGW laser, which directly generates broadly tunable mid-infrared (MIR) pulses, covering the whole vibrational spectrum from 3 to 10 µm. The avoidance of traditional difference-frequency generation stage access MIR range simplifies setup while enabling high conversion efficiencies. two-stage design employs in second either periodically poled lithium niobate, optimized for CH/OH stretching region (3-5 µm) or LiGaS 2 , allows extending tunability fingerprint (up µm). anticipate applications this versatile source ultrafast spectroscopy and infrared microscopy.

Язык: Английский

Процитировано

22
5–13.5 μm broadband tunable long-wave infrared femtosecond laser DOI Creative Commons
Yunpeng Liu,

Junyu Qian,

Renyu Feng

и другие.

APL Photonics, Год журнала: 2024, Номер 9(8)

Опубликована: Авг. 1, 2024

We introduce a broadband tunable femtosecond laser source in the long-wave infrared (LWIR) band, covering range of 5–13.5 μm, based on integration optical parametric amplification and difference frequency generation techniques. utilize dual-stage tuning method, combined with high nonlinear coefficient phase matching BaGa4Se7 crystal, to facilitate significant improvements spectral coverage energy efficiency. The yields peak output 43 μJ maintains energies above 10 across entire range, an average power exceeding mW. pulse duration at central wavelength 8.3 μm is measured 72 fs full width half-maximum using electro-optic sampling method. This LWIR can be used many applications, such as molecular fingerprint analysis, ultrafast chemical reaction materials science, physics research, providing important research basis for application mid-infrared sources.

Язык: Английский

Процитировано

3
Multi‐Watt Long‐Wavelength Infrared Femtosecond Lasers and Resonant Enamel Ablation DOI
Xuemei Yang,

Dunxiang Zhang,

Weizhe Wang

и другие.

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Abstract High average power broadband tunable long‐wavelength infrared (LWIR) femtosecond lasers operating at fingerprint wavelengths of 7–14 µm hold significant promise across a range applications, including molecular hyperspectral imaging, strong‐field light‐matter interaction, and resonant tissue ablation. Here, 6–12 parametric amplifier based on LiGaS 2 or BaGa 4 S 7 , generating an output 2.4 W 7.5 µm, 1.5 9.5 pumped by simple effective thin‐square‐rod Yb:YAG producing 110 274 fs pulses is presented. As proof concept, efficient ablation microstructure fabrication enamel are showcased the hydroxyapatite wavelength with laser intensity two orders‐of‐magnitude lower than that required non‐resonant lasers, which can foster more precision surgical applications superior biosafety.

Язык: Английский

Процитировано

0