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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt
Telefon: +49 6151 4259 78
Telefax: +49 6151 4259 88 
E- mail: info [at] topag.de 

ORPHEUS-F

3731
Tunable femtosecond OPA system ORPHEUS-F
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orpheus f 1

The ORPHEUS-F is a broad bandwidth hybrid optical parametric amplifier which combines a wide wavelength tuning range 320-2500nm and short pulses down to 25fs. The short pulse duration is produced by a non‑collinear first stage of OPA combined with second collinear stage which provides wide wavelength tuning range. OPA ORPHEUS-F accepts up to 20W pump power and can operate at repetition rates up to 1MHz.

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Bezeichnungen der Tabs

  • Description
  • Specifications
  • Pictures
Tab 1

Features

  • Combines the best features of collinear and non-collinear OPA
  • <100 fs pulse duratioin
  • Variable bandwidth
  • Single pulse - 1 MHz repetition rate
  • Computer controlled

ORPHEUS‑F is a hybrid optical parametric amplifier of white‑light continuum pumped by femtosecond Ytterbium based laser amplifiers. This OPA combines the short pulse durations that are produced by a non‑collinear OPA and wide wavelength tuning range offered by collinear version. The Signal beam can be easily compressed with a simple prism‑based setup down to < 60 fs in most of the tuning range, while Idler is compressed in bulk material down to 40 fs – 90 fs depending on wavelength.

It is possible to limit the output bandwidth to some extent (up to 2 – 3 times) without losing any output power. By comparison, standard ORPHEUS device uses spectral narrowing to produce bandwidth‑limited 200 fs – 300 fs duration pulses directly at the output, with extended Signal/Idler tuning range and options to generate ultraviolet and mid‑infrared light. Our non‑collinear ORPHEUS‑N‑2H device produces even broader bandwidths, compressible down to 20 fs, but limits the tuning range to 650 nm – 900 nm. This places the performance of ORPHEUS‑F configuration in between our other solutions.

Tab 2

Required pump laser PHAROS, PHAROS-SP or CARBIDE laser
Tuning range    650–900 nm (signal)
1200–2500 nm (idler)
Conversion efficiency at peak of tuning curve, signal and idler combined >10%, for pump energy 30–500 µJ
Pulse energy stability <2% rms @ 700-900 nm and 1200-2000 nm
Pulse Bandwidth 200-600 cm-1 @ 650-900 nm
150-500 cm-1 @ 1200-2000 nm
Pulse duration before compression  <250 fs
Pulse duration after compression* 25-70 fs @ 650-900 nm
40-100 fs @ 1200-2000nm
Compressor transmission* 50-70 % @ 700-900 nm
70-80 % @ 1200-2000 nm

* Optional compressor includes two prism compressor for signal and bulk compressor for idler

 

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Tab 5
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 Orpheus F typical performance
Beschreibung 1
 Typical performance of ORPHEUS-F
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 Orpheus F typical spectral bandwidth
Beschreibung 2
Typical spectral bandwidth of Orpheus-F
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 Orpheus F Typical pulse duration after external compression
Beschreibung 3
 Typical pulse duration after external compression ORPHEUS‑F
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