REUS Series - Ti:Sapphire Femtosecond Amplifiers

The REUS series is a family of regenerative and multipass ultrafast solid-state titanium-sapphire laser amplifiers. The systems produce ultra-short pulses of < 35 fs with solid-state seed oscillator. At a wavelength of 800 nm, different models are available with repetition rates in the range from 15 Hz to 1 kHz.

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Features

  • High nanosecond contrast ratio 104:1
  • User-adjustable output repetition rate (standard package)
  • Upgrade to TW-level
  • One-box solution
  • High beam quality and long-term stability

Applications

  • Pump-probe spectroscopy
  • Ultrafast OPA pumping
  • Ultrafast micromachining
  • Femtosecond ablation
  • OPG pumping
  • Front-end for TW and PW cass femtosecond amplifiers
  • Semiconductor studies

The REUS femtosecond amplifier family comprises regenerative, multipass and combined (RA+MPA) systems with Ti:S as active amplification medium. The systems are based on chirped pulse amplification approach (CPA) when femtosecond pulses being formed in a seed oscillator are stretched in a pulse stretcher, then amplified to required energy and then compressed back to femtosecond pulse duration. Almost all REUS amplifiers are equipped with a built-in pulse slicer (output pulse picker) based on a Pockels cell that significantly increases the systems contrast ratio and provides total control over the output pulse repetition rate including programmable bursts and "pulse-on-demand" functionality. The systems may be manufactured as a single one-box unit with integrated seed oscillator and pump lasers or as a separate modules with various configuration and adaptation possibilities with a customer-provided seed oscillator or amplifier pump laser(s).

We offer two basic seed oscillator modules: a solid-state Ti:S femtosecond oscillator with a wider spectrum resulting in ~30-40 fs amplified pulse duration or a fiber laser seed oscillator unit with a narrower spectrum but smaller footprint and likely more budget-friendly resulting in 90-120 fs amplified pulse duration. The systems may be adapted to accept a third-party seed oscillator or customized for a different set of seed and output parameters.

The system's output may be increased step by step by gradually adding additional amplification stages up to TW-level with 500 mJ pulse energy (10 Hz repetition rate).

 

Model REUS-0.5m1k REUS-1.5m100 REUS-3m1k REUS-5m1k REUS-5m20 REUS-10m15 REUS-25m15 REUS-C 1)
Pulse energy > 500 µJ > 1.5 mJ > 3 mJ > 5 mJ > 5 mJ > 10 mJ > 25 mJ up to 40 mJ
Wavelength 800 ± 20 nm (fixed) 740 - 950 nm
Pulse duration (FWHM) < 35 fs with solid-state seed oscillator
< 100 fs with fiber seed oscillator
30 - 120 fs
Repetition rate 2) 1 kHz 100 Hz 1 kHz 1 kHz 20 Hz 15 Hz 15 Hz 1 Hz - 10 kHz
Beam quality (M2) < 1.3 < 1.3 < 1.3 < 1.5 < 1.3 < 1.5 < 2 -
Pulse energy stability (RMS) < 2.5 % < 2 % < 1 % < 1 % < 2.5 % < 2.5 % < 2.5 % -

1) The ranges of paramenters in this column are given for possible customized development of an amplifier system or its adaptation to a customer-provided pump laser and/or seed oscillator.

2) The output pulse repetition rate is adjustable via a built-in pulse slicer from single-shot to nominal rep. rate of a given amplifier.

Do you have questions about REUS?

Write to us | info@topag.de

Give us a call | +49 6151 425978

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Do you have questions about our products?

Write to us | info@topag.de

Give us a call | +49 6151 425978

TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt, Germany
Phone: +49 6151 4259 78
Fax: +49 6151 4259 88
E-mail: info@topag.de