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Picosecond Optical Parametric Amplifier

TOPAS-800-PS Picosecond Optical Parametric Amplifier
  • 1 – 2 ps pulse duration
  • 240 nm – 20 μm tuning range
  • Up to 5 mJ pump pulse energy
  • > 20% conversion efficiency
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TOPAS-800-PS Picosecond Optical Parametric Amplifier

TOPAS-PS-800 is a picosecond optical parametric amplifier (OPA) pumped by the fundamental harmonic of a picosecond Ti:Sapphire laser, covering a wavelength range of 1160 – 2600 nm.

Optional frequency mixers extend the tuning range down to 240 nm and up to 20 μm.

Specifications
Specifications notes

TOPAS-PS-800 specifications are given for the following pump parameters:

  • Wavelength: 800 nm
  • Pulse energy: 1 mJ
  • Repetition rate: 1 kHz
  • Pulse duration: 1 – 2 ps
  • Beam profile: Gaussian

Note 1: Specifications depend on the pump wavelength and pulse duration. If these differ from the values listed above, contact sales@lightcon.com.

Note 2: TOPAS-PS-800 output pulse energy scales linearly within the 1 – 5 mJ range, provided the device is installed and optimized for a specific pump energy. Re-optimization is required if the pump energy changes by more than 10% from the installation value.

Pump laser requirements
ModelTOPAS-PS-800
Pump wavelength770 – 830 nm
Pump pulse duration (FWHM)1 – 2 ps
Pump pulse energy0.2 – 5 mJ
Repetition rate< 25 kHz
Maximum pump power25 W 1)
PolarizationHorizontal
Spectral bandwidth< 1.2 × transform limit
Pulse-to-pulse energy stability< 1 % RMS deviation 2)
Pulse duration stability< 1 % pulse-to-pulse 3)
Pulse front tilt< 10% of pulse duration
Pulse contrast< 1 : 20
Beam quality, M2< 1.3 4)
Beam astigmatism< 0.15 5)
Beam spatial profileGaussian – Super Gaussian
Intensity modulation< 15%, no hotspots 6)
Beam pointing stability< 10 μrad 7)
Beam divergence< 1.2 × diffraction limit
Beam height from optical table125 – 185 mm
Beam diameter, 1/e2< 7 mm 8)
ModelTOPAS-PS-800
  1. Contact sales@lightcon.com for higher pump power options.
  2. Normalized to average pulse energy. Expressed as normalized root mean squared deviation NRMSD.
  3. Normalized to average pulse duration. Expressed as NRMSD.
  4. M2 specification valid for Gaussian beam.
  5. Normalized astigmatism – difference of the waist positions, divided by Rayleigh length.
  6. Normalized to Gaussian or Super-Gaussian fits. Expressed as NRMSD.
  7. Expressed as NRMSD, full angle.
  8. An optional external telescope can be ordered for a beam size of 7 – 28 mm.
Main output (1160 – 2600 nm)
ModelTOPAS-PS-800
Tuning range (Signal and Idler combined)1160 – 2600 nm
Conversion efficiency at peak (Signal and Idler combined)> 25%
Pulse duration(0.7 – 1) × pump pulse duration
Spectral bandwidth< 2.5 × pump pulse spectral bandwidth
PolarizationVertical (Signal)
Horizontal (Idler)
Pulse-to-pulse energy stability< 5% RMS deviation 1)
ModelTOPAS-PS-800
  1. Normalized to average pulse energy. Expressed as NRMSD.
VIS extensions (475 – 1160 nm)
ExtensionSeparate mixer stage
SHS (580 – 800 nm)
Tuning range580 – 800 nm
Conversion efficiency at peak> 5%
Pulse duration< 3 × pump pulse spectral bandwidth
PolarizationHorizontal
SHI (800 – 1160 nm)
SFS (475 – 533 nm)
SFI (533 – 600 nm)
ExtensionSeparate mixer stage
UV extensions (240 – 480 nm)
ExtensionSeparate mixer stage
FHS (290 – 400 nm)
Tuning range290 – 400 nm
Conversion efficiency at peak> 1.5%
Pulse duration< 3.5 × pump pulse spectral bandwidth
PolarizationVertical
FHI (400 – 480 nm)
SH of SFS (240 – 266 nm)
SH of SFI (266 – 295 nm)
ExtensionSeparate mixer stage
DFG extensions (2600 – 20000 nm)
ExtensionDFG1DFG2
Tuning range2.6 – 11 μm4 – 20 μm
Conversion efficiency at peak> 0.7%> 0.7%
Spectral width<  3.5× pump pulse spectral bandwidth<  3.5× pump pulse spectral bandwidth
Spectral width<  3.5× pump pulse spectral bandwidth
PolarizationHorizontalHorizontal
PolarizationHorizontal
ExtensionDFG1DFG2
Publications
Transient absorption spectroscopy TOPAS-PS-800
The origin of efficient triplet state population in sulfur-substituted nucleobases
S. Mai, M. Pollum, L. Martínez‑Fernández, N. Dunn, P. Marquetand et al.
Nature Communications • 2016
Sum-frequency spectroscopy TOPAS-PS-800
Investigations of Polymyxin B-Phospholipid Interactions by Vibrational Sum Frequency Generation Spectroscopy
C. Ohe, Y. Ida, S. Matsumoto, T. Sasaki, Y. Goto et al.
The Journal of Physical Chemistry B • 2004
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