A5007078934- Advanced Fiber Laser Technologies
- Spectroscopy and Laser Applications
- Photonic Crystal and Fiber Optics
- Photonic and Optical Devices
- Laser-Matter Interactions and Applications
- Solid State Laser Technologies
- Atmospheric Ozone and Climate
- Laser Design and Applications
- Spectroscopy Techniques in Biomedical and Chemical Research
- Advanced Fiber Optic Sensors
- Optical and Acousto-Optic Technologies
- Mass Spectrometry Techniques and Applications
- Analytical Chemistry and Sensors
Wrocław University of Science and Technology
2017-2023
AGH University of Krakow
2017-2023
We use a Fourier transform spectrometer based on compact mid-infrared difference frequency generation comb source to perform broadband high-resolution measurements of nitrous oxide, $^{14}$N$_2$$^{16}$O, and retrieve line center frequencies the $\nu$$_1$ fundamental band + $\nu$$_2$ - hot band. The spectrum spans 90 cm$^{-1}$ around 1285 with sample point spacing 3 ${\times}$ 10$^{-4}$ (9 MHz). report positions 72 lines in between P(37) R(38), 112 (split into two components e/f rotationless...
Abstract In this work, we show that the nonlinear evolution of femtosecond seed pulses with different parameters (temporal and spectral shapes, repetition rate, pulse energy) in an Yb-fiber amplifier leads to gain-managed amplification, enabling robust generation high-peak-power nearly transform-limited after external compression. We demonstrate a compressed duration 33 fs energy 80.5 nJ peak power 2.29 MW for source rate 30 MHz. For second 125 MHz, obtained 51 22.8 420 kW. Numerical...
We present the first mid-infrared optical frequency comb spectrometer employing an absorption cell based on self-fabricated, all-silica antiresonant hollow-core fiber (ARHCF). The is capable of measuring sub-mL sample volumes with 26 m interaction length and noise equivalent sensitivity 8.3 × 10
Our first demonstration of an all-PM fiber double clad erbium-ytterbium figure-8 laser mode-locked in a dissipative soliton resonance regime is presented. The generated µJ-level rectangular-shaped pulses with maximum average output power 1 W at 994 kHz repetition rate. proposed configuration was characterized for two values resonator lengths - 44 and 205 m (total net-dispersion -0.9274 ps2 -4.3084 ps2, respectively) to verify the possibility non-complex tailoring pulse parameters. long-term...
We report an all-fiber, all-polarization maintaining (PM) source of widely tunable (1800–2000 nm) ultrashort pulses based on the amplification coherent self-frequency-shifted solitons generated in a highly nonlinear fiber pumped with Er-doped laser. The system delivers sub-100 fs energies up to 8.6 nJ and is built entirely from PM optical fibers, without any free-space optics. all-fiber alignment-free design significantly increases suitability such for field deployments.
A compact and robust all-fiber difference frequency generation-based source of broadband mid-infrared radiation is presented. The emits tunable in the range between 6.5 µm 9 with an average output power up to 5 mW at 125 MHz repetition frequency. all-in-fiber construction along active stabilization techniques results long-term rate stability 3 Hz per 10 h a standard deviation better than 0.8% 1 h. applicability presented laser spectroscopy demonstrated by measuring absorption spectrum...
A 125 MHz fiber-based frequency comb source in the mid-infrared wavelength region is presented. The based on difference generation from a polarization-maintaining Er-doped fiber pump laser and covers spectrum between 2900 cm-1 3400 with simultaneous bandwidth of 170 an average output power up to 70 mW. equipped actuators active feedback loops, ensuring long-term stability repetition rate, power, spectral envelope. An absorption ethane methane was measured using Fourier transform spectrometer...
We report the development of compact ultrafast lasers for applications in molecular spectroscopy and imaging human retina. The possibility using AI-based algorithms to optimize ultrashort laser pulses will also be discussed.
Herein, we report on the possibility of ultrashort laser pulse generation in broadband spectral range using a saturable absorber based free-standing metallic carbon nanotube thin film. Erbium, thulium, and holmium-doped all-fiber lasers were mode-locked with single containing 300 nm thick material layer. Subpicosecond pulses generated at 1559, 1938, 2082 nm. Our work validates operation nanotube-based absorbers highlights suitable performance nanomatematerial for ultrafast photonic applications.
We present precise broadband measurements of absorption and dispersion spectra carbon monoxide 0-3 band in argon. They were performed using frequency comb cavity mode width spectroscopies with a mechanical FTS setup.
Optical frequency combs (OFCs) enable high resolution, sensitivity, and speed in spectroscopic measurements. An efficient way of generating an optical comb the mid-infrared (mid-IR) is difference generation (DFG) process, which involves interaction two input waves a non-linear crystal, resulting third wave with that beams [1]. The classical extending path light-gas measurements, thus increasing to use multi-pass cells (MPC). However, MPCs have disadvantages related difficulty aligning laser...
The Laser & Fiber Electronics Group (LFEG) constitutes a team of young, skilled and ambitious researchers, doctoral candidates students. possesses great experience in applied optoelectronics laser technology. Currently, it conducts research several areas,mostly focusing on: ultrashort pulse generation using novel materials, development pulsed fiber sources ranging from visible to mid-infrared, compact mid-infrared optical frequency combs, spectroscopy techniques, vibrometry, solid-state...
Recent decade brought a tremendous progress laser-based gas detection techniques. This would not be possible without the relentless devotion of scientific community in developing state-of-the-art sources capable targeting strong absorption lines gases localized mid-infrared (mid-IR) wavelength region. Although narrowband, semiconductor-based mid-IR lasers offer non-complex implementation their tuning range is usually limited to several cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...
We report a compact, actively stabilized fiber-based mid-infrared frequency comb source covering the 6.5 – 9 μm wavelength range with up to 5 mW of average output power at 125 MHz repetition frequency.
We demonstrate a compact firlly-stabilized fiber-based optical frequency comb based on difference generation finable from 6.5 to 9 pm and its application Fourier transform spectroscopy of nitrous oxide (N2O).
We report the development of compact, stabilized fiber-based mid-infrared frequency comb sources covering 7–9 μm and 3.1–3.4 spectral ranges. Both enable high-precision Fourier-transform spectroscopy greenhouse gases.
Using a compact fiber-based difference frequency generation comb and Fourier transform spectrometer we record spectra of the N 2 O ν 1 band at 1285 cm -1 in Doppler limit. Fitting Gaussian line shapes to individual absorption lines yields center frequencies with <200 kHz average precision.
Despite many years of scientific work on evolving ultra-short laser pulses with high energy, there is still a need for even shorter higher peak intensity science, industry, and defence. The most popular method amplification - chirped-pulse (CPA) limited by gain-narrowing can be worked around nonlinear pulse compression. This does however increase the complexity setup. newest regime reported group F. Wise deliver short close to transform limit simple, undemanding setup [1] , [2] ....
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Mid-infrared comb-based Fourier transform spectroscopy allows high-resolution measurements of entire molecular absorption bands. However, most previous implementations were limited to wavelengths < 5 µm. We present a spectrometer (FTS) with comb-mode-limited resolution based on compact difference frequency generation (DFG) source operating around 8 measure the spectrum ν 1 band N 2 O in Doppler limit and retrieve line center frequencies precision order 100 kHz.