UltraFlux FF/FT 5000

High Energy Tunable Wavelength Femtosecond Laser Systems
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  • Based on the novel OPCPA technology
  • Patented front-end design
  • Up to 1 kHz repetition rate
  • Up to 50 mJ pulse energy
  • Based on the novel OPCPA technology
  • Patented front-end design
  • Up to 1 kHz repetition rate
  • Up to 50 mJ pulse energy

Features & Applications

Features

  • Based on the novel OPCPA (Optical Parametric Chirped Pulse Amplification) technology – simple and cost-efficient operation
  • Patented front-end design (patents no. EP2827461 and EP2924500)
  • Hands free wavelength tuning
  • Up to 1 kHz repetition rate
  • Up to 50 mJ pulse energy
    – Excellent pulse energy stability: < 1.5 % rms
    – Excellent long-term average power stability:
    < 1.5 % rms over > 12 hour period
  • High contrast pulses without any additional improvement equipment

Applications

  • Broadband CARS and SFG
  • Femtosecond pump-probe spectroscopy
  • Nonlinear spectroscopy
  • High harmonic generation
  • Particle acceleration in plasma

Description

The UltraFlux FF/FT 5000 laser is a 2 TW tabletop femtosecond OPCPA (Optical Parametric Chirped Pulse Amplification) based system operating at 10 Hz. Originally built for ELI‑ALPS (Extreme Light Infrastructure – Attosecond Light Pulse Source) in Hungary, this laser is now available for a wide variety of applications.

The master oscillator is a patent pending (EP2827461A2) all-in-fiber Yb fiber picosecond laser seed source with two fiber outputs. One seeds the OPCPA Front-End and another seeds the Picosecond Pump Laser (PPL). Both outputs originate from the same fiber so they are synchronized optically. This approach eliminates the need for a complex temporal synchronization system typically present in other OPCPA systems.

The Nd:YAG Picosecond Pump Laser (PPL) system is comprised of several sub-systems: diode pumped Regenerative Amplifier, diode pumped Preamplifier, two flash lamp pumped Amplifiers, and Second Harmonic Generators which convert fundamental 1064 nm wavelength to 532 nm. PPL outputs four beams at 532 nm and 10 Hz pulse repetition rate. One beam is directed to NOPCPA Front-End subsystem and others are directed to NOCPA stages.

The Front-End NOPCPA (Non-collinear Optical Parametric Chirped Pulse Amplifier) consists of several sub-systems: Picosecond Optical Parametric Amplifier (ps-OPA) amplifying oscillator output pulses, Grating Compressor compressing ps-OPA output pulses, White Light Generator (WLG) broadening the spectrum of ps-OPA output pulses and Femtosecond Non-collinear Optical Parametric Amplifier (fs‑NOPA) amplifying WLG output pulses.

The Stretcher sub-system is a Grism (diffraction gratings combined together with prisms) based pulse stretcher, which stretches output pulse from NOPCPA Front-End and Dazzler (Acousto-Optic Programmable Dispersive Filter) for high order phase compensation.

Three stages of NOPCPA (Non-collinear Optical Parametric Chirped Pulse Amplifiers) are used to amplify the stretched pulse from the Stretcher up to 50 mJ.
Finally, amplified pulses are compressed down to 11 fs in the Pulse Compressor. Bulk glass compressors are combined together with chirped mirror compressors. Pulse energy after Compressor is >40 mJ.

The built-in Output Diagnostics stage ensures reliable, turn-key operation by monitoring critical parameters such as energy, duration, and beam profile.

Specifications

ModelUltraFlux FT5010UltraFlux FF50100-SP
MAIN SPECIFICATIONS 1)
Max. pulse energy50 mJ
    SH output 4)inquire
    TH output 4)inquire
    FH output 4)inquire
Output wavelength
    Standard version750 – 960 nm, tunable750 – 960 nm, fixed at desired wavelength
    SH output 4)375 – 480 nm, tunable375 – 480 nm, fixed at desired wavelength
    TH output 4)250 – 320 nm, tunable250 – 320 nm, fixed at desired wavelength
    FH output 4)210 – 230 nm, tunable210 – 230 nm, fixed at desired wavelength
Scanning steps
    SH output 4)5 nm
    TH output 4)3 nm
    FH output 4)2 nm
Pulse duration20 – 60 fs10 – 20 fs
Pulse repetition rate10 Hz100 Hz
Pulse energy stability< 1.5 %, rms< 2.0 %, rms
Long-term power stability< 1.5 %, rms
Spatial modeSuper GaussianTop-Hat
Beam diameter (1/e²)7 mm20 mm
Pulse contrast 2)≥ 10⁻⁶ : 1 (within ± 50 ps)
≥ 10⁻⁸ : 1 (in ns range)
PolarizationLinear, horizontal
Beam pointing stability≤50 µrad, rms
Optical to RF signal jitter 3)< 1 ps
Footprint on optical table1.2 × 2.0 m1.2 × 4.8 m
  1. Presented parameters are from delivered systems and can be customized to meet customer‘s requirements.
  2. Pulse contrast is only limited by amplified parametric fluorescence (APF) in the temporal range of ~90 ps which covers OPCPA pump pulse duration and is better than 10⁶ : 1. APF contrast depends on OPCPA saturation level (Fig. below). Our system is ASE-free and pulse contrast value in nanosecond range is limited only by measurement device capabilities (third-order autocorrelator). There are no pre-pulses generated in the system and post-pulses are eliminated by using wedged transmission optics.
  3. With -PLL option purchased.
  4. With SH/TH or SH/TH/FH module.

Performance

Publications

Found total :
1 article, 1 selected
Application selected :
All Applications
All Applications
Scientific Applications
High Intensity Sources – laser produced plasma, x-ray source
OPCPA Systems – optical parametric chirped pulse amplification system

53 W average power CEP-stabilized OPCPA system delivering 5.5 TW few cycle pulses at 1 kHz repetition rate

Related applications:  High Intensity Sources OPCPA Systems

Authors:  R. Budriūnas, T. Stanislauskas, J. Adamonis, A. Aleknavičius, G. Veitas, D. Gadonas, S. Balickas, A. Michailovas, A. Varanavičius

We present a high peak and average power optical parametric chirped pulse amplification system driven by diode-pumped Yb:KGW and Nd:YAG lasers running at 1 kHz repetition rate. The advanced architecture of the system allows us to achieve >53 W average power combined with 5.5 TW peak power, along with sub-220 mrad CEP stability and sub-9 fs pulse duration at a center wavelength around 880 nm. Broadband, background-free, passively CEP stabilized seed pulses are produced in a series of cascaded optical parametric amplifiers pumped by the Yb:KGW laser, while a diode-pumped Nd:YAG laser system provides multi-mJ pump pulses for power amplification stages. Excellent stability of output parameters over 16 hours of continuous operation is demonstrated.

Published: 2017.   Source: Optical Society of America | Vol. 25, No. 5 | 6 Mar 2017 | OPTICS EXPRESS 5799

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