UltraFlux

Tunable Wavelength Femtosecond Laser System
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  • Tunable wavelength femtosecond OPCPA system
  • 700 to 1010 nm, 350 – 480 nm and 245 – 320 nm tuning
  • Up to 0.3 mJ pulse energy at 1 kHz repetition rate
  • Perfectly synchronized fs and ps outputs option
  • Tunable wavelength femtosecond OPCPA system
  • 700 to 1010 nm, 350 – 480 nm and 245 – 320 nm tuning
  • Up to 0.3 mJ pulse energy at 1 kHz repetition rate
  • Perfectly synchronized fs and ps outputs option

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 from 700 to 1010 nm, 35 – 60 fs pulse duration
  • 1 kHz repetition rate
  • 0.3 mJ pulse energy
    –    Excellent pulse energy stability: < 1.5 % rms (measuring every pulse during 20 s period)
    –    Excellent long-term average power stability: ±1% (peak-to-peak) over > 12 hour period
  • Small footprint
  • High contrast pulses without any additional improvement equipment
  • Compact picosecond pump laser

Applications

  • Broadband CARS and SFG
  • Femtosecond pump-probe spectroscopy
  • Nonlinear spectroscopy
  • High harmonic generation

Options

  • Amplified and compressed supercontinuum output (1 μJ, 10 fs, full spectrum of 680 – 960 nm, not tunable)
  • Second harmonics: 350 – 480 nm
  • Third harmonics: 245 – 320 nm
  • Optically synchronized transform-limited ps output (50 µJ @ 1064 nm, 20 µJ @ 532 nm, 15 ps)
  • Higher output energy available on request

Description

UltraFlux is the first compact high energy tuneable wavelength femtosecond laser system which incorporates the advantages of ultrafast fiber laser, solid-state and parametric amplification technologies in less than 1 square meter footprint box. Patent pending (application No. EP2924500) OPCPA front end technology uses the same picosecond fiber laser for seeding both picosecond DPSS pump laser and femtosecond parametric amplifier by spectrally broadened output. This approach greatly simplifies the system – excludes femtosecond regenerative amplifier and eliminates the need of pump and seed pulse synchronization. In addition to that, contrast of the output pulses in picosecond to nanosecond time scale is potentially increased.

System generates down to 35 fs pulses, which can be automatically tuned in 700 – 1010 nm wavelength range. Less than 10 fs pulses are obtained in a few-cycle operating regime. Up to 0.3 mJ output pulse energy with better than 1.5% pulse-to-pulse stability at 1 kHz repetition rate is achieved by using a state of the art OPCPA technology.

By incorporating parametric amplifier technology together with a novel ultrafast fiber laser helped to create and bring to the market a new tool for femtosecond pump probe, nonlinear spectroscopy, emerging high harmonic generation experiments and other femtosecond and nonlinear spectroscopy applications. With this laser ultrafast science breakthrough is closer to any photonics lab than ever before.

Specifications

ModelUltraFlux FT2101
Main specifications 1)
Max. pulse energy 2)0.3 mJ
Tunability700 – 1010 nm
Pulse duration35 – 60 fs
Pulse repetition rate1 kHz
Beam qualityM2 < 1.5
Pulse energy stability< 1.5 % rms (20000 shots)
Long-term power stability±1 % (>12 hour period)
Footprint1.2 × 0.75 m
  1. Due to continuous improvement, all specifications are subject to change without notice. Parameters marked typical may vary with each unit we manufacture.
  2. Inquire for higher energy options.

Performance

Tailored for Specific Applications

The UltraFlux 4010 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. Block diagram is presented in drawing below.

UltraFlux 4010 laser block diagram

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 below 20 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.

System specifications 1)

ParameterValue
Max. pulse energy40 mJ
Central wavelength840 nm
Pulse duration<20 fs
Output beam diameter~80 mm
Pulse repetition rate10 Hz
Pulse energy stability (RMS)<1.5 %
Footprint on optical table1200 × 4800 mm
Footprint of power supply/cooling rack550 × 600 mm
  1. Output parameters can be customized according customer‘s requirements.

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