Dual Optical Parametric Amplifier TOPAS-TWINS

  • Two independently tunable outputs
  • 240 nm – 20 μm tuning range, in each channel
  • > 25% conversion efficiency
  • High output stability

Features

  • Two independently tunable outputs
  • 240 nm – 20 μm tuning range, in each channel
  • > 25% conversion efficiency
  • High output stability

TOPAS-TWINS consists of two independently tunable optical parametric amplifiers (OPAs) integrated into a single housing. Both OPAs share the same white light source to provide excellent stability of both outputs, and CEP stabilized mid-IR pulses in a tuning range of 4.5 – 15 μm.

Both OPAs come with wavelength extension options, covering the wavelength range from 240 nm to 20 μm. Output specifications for each OPA are the same as those of TOPAS-PRIME. The maximum pump pulse energy depends on the pulse duration; see the specifications for more details.

TOPAS-TWINS specifications are given for the following pump laser parameters:

  • 800 nm wavelength
  • 1 mJ pulse energy
  • 1 kHz repetition rate
  • 30 – 40 fs pulse duration
  • Gaussian beam

Note 1: Specifications are given for a single TOPAS-TWINS channel.

Note 2: Specifications depend on pump wavelength and pulse duration. If they differ from the values above, contact sales@lightcon.com.

Note 3: Output pulse energy of each TOPAS-TWINS channel scales linearly in 1 – 3.5 mJ range, provided the device is installed and optimized for particular pump energy. The device has to be re-optimized if the pump energy changes more than 10% from the installation value.

Model TOPAS-TWINS
OPA channel OPA-1 OPA-2
Pump wavelength 770 – 830 nm
Pump pulse duration (FWHM) 20 – 70 fs 20 – 35 fs 35 – 70 fs
Pump pulse energy 0.15 – 0.8 mJ 0.15 – 2.5 mJ 0.15 – 3.5 mJ
Repetition rate < 20 kHz 1)
Maximum pump power 15 W into each OPA
Pump polarization Horizontal
Spectral bandwidth < 1.2× transform limit
Energy stability ⩽ 1% RMS deviation 2)
Stability of pulse duration ⩽ 1% pulse-to-pulse
Pulse front tilt < 10% of pulse duration
Pulse contrast < 1: 20
Beam quality (M2) ⩽ 1.3
Beam astigmatism < 0.15
Input beam spatial profile Gaussian – Hyper-Gaussian
Intensity modulation ⩽ 15%, no hot spots
Beam pointing stability < 10 μrad
Beam divergence < 1.2× diffraction limit
Beam height from optical table 125 – 185 mm from optical table
Beam diameter, 1/e2 < 8.5 mm 3)
  1. Maximum repetition rate for DFG1 (NDFG1) option is 1 kHz.
  2. Normalized to average pulse energy, NRMSD.
  3. Optional external telescope can be ordered for the beam diameter of 8.5 – 28 mm.
Model TOPAS-TWINS
Tuning range
(Signal and Idler combined)
1160 – 1600 nm (Signal)
1600 – 2600 nm (Idler)
Pulse energy at peak
(Signal and Idler combined)
> 250 μJ
Pulse duration (1 – 1.5)× pump pulse duration @ 1160 – 1550 nm
< 2× pump pulse duration @ 1550 – 2600 nm
Time-bandwidth product < 1
Polarization Vertical (Signal)
Horizontal (idler)
Pulse-to-pulse energy stability < 3% RMS deviation 1) @ 1160 – 1550 nm
  1. Normalized to average pulse energy, NRMSD.
Extension Standard NIRUVIS Separate mixer stage(s)
Level of computer control Manual change of wavelength separators
Maximum wavelength range 240 – 1160 nm
Housing Monolithic housing No common housing
Number of output ports 4 (wavelength-dependent)
Extension Standard NIRUVIS Separate mixer stage
SHI Tuning range  800 – 1160 nm
Pulse energy at peak > 20 μJ > 15 μJ
Pulse duration (1 – 1.5)× pump pulse duration
Polarization Vertical
SHS Tuning range 580 – 800 nm
Pulse energy at peak > 30 μJ
Pulse duration (1 – 1.5)× pump pulse duration @ 620 – 800 nm
Polarization Vertical Horizontal
Extension Standard Niruvis Separate mixer stage
Fresh pump option Not available
SFI Tuning range 533 – 600 nm
Pulse energy at peak > 30 μJ
SFS Tuning range 475 – 533 nm
Pulse energy at peak > 40 μJ
Pulse duration (1 – 1.5)× pump pulse duration
Polarization Vertical

 

Extension Standard NIRUVIS Separate mixer stage
FHI Tuning range 400 – 480 nm
Pulse energy at peak > 4 μJ > 2.5 μJ
Pulse duration (1.2 – 2)× pump pulse duration
Polarization Horizontal
FHS Tuning range 290 – 400 nm
Pulse energy at peak > 5 μJ 
Pulse duration (1.2 – 2)× pump pulse duration
Polarization Horizontal Vertical
Extension Standard NIRUVIS Separate mixer stage
SH of SFI Tuning range 266 – 295 nm
Pulse energy at peak > 3 μJ 
Pulse duration (1.2 – 2)× pump pulse duration
Polarization Horizontal
SH of SFS Tuning range 240 – 266 nm
Pulse energy at peak > 3 μJ 
Pulse duration < 3× pump pulse duration
Polarization Horizontal
Extension NDFG1 1)  NDFG1K 2) NDFG2
Tuning range 2.6 – 9 μm 2.6 – 4.5 μm 4 – 13 μm
Pulse energy > 2 μJ @ 4 μm
> 0.5 μJ @ 9 μm
> 2 μJ @ 4 μm > 1 μJ @ 5 μm
> 0.1 μJ @ 13 μm
Pulse duration < 3× pump pulse duration < 3× pump pulse duration Not specified
Polarization Horizontal Horizontal Horizontal
  1. Maximum pump repetition rate – 1 kHz. Limited crystal life time of 1000 – 2000 h.
  2. Not available in collinear configuration.

TOPAS-TWINS specifications are given for the following pump laser parameters:

  • 800 nm wavelength
  • 1 mJ pulse energy
  • 1 kHz repetition rate
  • 100 – 150 fs pulse duration
  • Gaussian beam

Note 1: Specifications are given for a single TOPAS-TWINS channel.

Note 2: Specifications depend on pump wavelength and pulse duration. If they differ from the values above, contact sales@lightcon.com.

Note 3: Output pulse energy of each TOPAS-TWINS channel scales linearly in 1 – 4 mJ range, provided the device is installed and optimized for particular pump energy. The device has to be re-optimized if the pump energy changes more than 10% from the installation value.

Model TOPAS-TWINS
OPA channel OPA‑1 OPA‑2
Pump wavelength 770 – 830 nm
Pump pulse duration (FWHM) 70 – 200 fs
Pump pulse energy 0.15 – 2 mJ 0.15 – 4 mJ
Repetition rate < 20 kHz 1)
Maximum pump power 15 W into each OPA
Pump polarization Horizontal
Spectral bandwidth < 1.2× transform limit
Pulse-to-pulse energy stability < 1% RMS deviation 2)
Pulse duration stability < 1% pulse-to-pulse
Pulse front tilt < 10% of pulse duration
Pulse contrast > 1 : 20
Beam quality (M2) < 1.3
Beam astigmatism < 0.15
Beam spatial profile Gaussian – Hyper-Gaussian
Intensity modulation < 15%, no hotspots
Beam pointing stability < 10 μrad
Beam divergence < 1.2× diffraction limit
Beam height from optical table 125 – 185 mm
Beam diameter, 1/e2 < 8.5 mm
  1. Maximum repetition rate for DFG1 (NDFG1) option is 1 kHz.
  2. Normalized to average pulse energy, NRMSD.
  3. Optional external telescope can be ordered for the beam diameter of 8.5 – 28 mm.
Model TOPAS-TWINS
Tuning range 1160 – 1600 nm (Signal)
1600 – 2600 nm (Idler)
Pulse energy at peak
(Signal and Idler combined)
> 250 μJ
Pulse duration (0.7 – 1)× pump pulse duration
Time-bandwidth product < 1
Polarization Vertical (Signal)
Horizontal (Idler)
Pulse-to-pulse energy stability < 2% RMS deviation 1) @ 1160 – 1550 nm
  1. Normalized to average pulse energy, NRMSD
Extension Standard NIRUVIS Separate mixer stage(s)
Control Manual change of wavelength separators
Maximum wavelength range 240 – 1160 nm
Housing Monolithic housing No common housing
Number of output ports 4 (wavelength-dependent)
Extension Standard NIRUVIS Separate mixer stage
SHI Tuning range  800 – 1160 nm
Pulse energy at peak > 50 μJ > 30 μJ
Pulse duration (0.7 – 1)× pump pulse duration
Polarization Vertical
SHS Tuning range 580 – 800 nm
Pulse energy at peak > 80 μJ
Pulse duration (0.7 – 1)× pump pulse duration
Polarization Horizontal
Extension Standard NIRUVIS Separate mixer stage
Fresh pump option Not available
SFI

Tuning range 533 – 600 nm
Pulse energy at peak > 50 μJ
Pulse duration (0.7 – 1)× pump pulse duration
SFS

Tuning range 475 – 533 nm
Pulse energy at peak > 70 μJ
Pulse duration (0.8 – 1.2)× pump pulse duration
Polarization Vertical
Extension Standard NIRUVIS Separate mixer stage
FHI Tuning range 400 – 480 nm
Pulse energy at peak > 15 μJ > 6 μJ
Pulse duration (0.7 – 1)× pump pulse duration
Polarization Horizontal
FHS Tuning range 290 – 400 nm
Pulse energy at peak > 15 μJ 
Pulse duration (0.8 – 1.2)× pump pulse duration
Polarization Vertical
Extension Standard NIRUVIS Separate mixer stage
SH of SFI Tuning range 266 – 295 nm
Pulse energy at peak > 7 μJ 
Pulse duration (0.8 – 1.2)× pump pulse duration
Polarization Horizontal
SH of SFS Tuning range 240 – 266 nm
Pulse energy at peak > 8 μJ 
Pulse duration < 1.5× pump pulse duration
Polarization Horizontal
Extension NDFG1 1)  NDFG1K 2) NDFG2
Tuning range 2.6 – 11 μm 2.6 – 4.9 μm 4 – 20 μm
Pulse energy > 8 μJ @ 4 μm
> 1.5 μJ @ 10 μm
> 8 μJ @ 4  μm > 4 μJ @ 5 μm
> 0.3 μJ @ 15 μm
Pulse duration < 2× pump pulse duration < 2× pump pulse duration Not specified
Polarization Horizontal Horizontal Horizontal
  1. Maximum pump repetition rate – 1 kHz. Limited crystal life time of 1000 – 2000 h.
  2. Not available in collinear configuration
Model TOPAS-TWINS
General dimension of the housing (W × L × H) 350 × 680 × 156 mm
NIRUVIS housing dimensions (W × L × H) 230 × 450 × 156 mm
DFG/NDFG housing dimensions (W × L × H) 230 × 330 × 156 mm

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