PGx01 Series - Tunable High Power OPG Systems

The OPG/OPA´s of PGx01 series offer ultra-wide spectral tuning from 193nm to 16µm with very high peak power (> 50 MW) and narrow linewidth (< 6 cm-1). Thus, they are an ideal instrument for nonlinear spectroscopy. Various options and extensions are available. These lasers are the perfect choice for all researchers who need ultrafast coherent light from UV to mid infrared.

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  • Ultra-wide spectral range from 193 to 16000 nm
  • High peak power (>50 MW) ideal for non-linear spectroscopy applications
  • Narrow linewidth <6 cm⁻¹ (for UV < 9 cm-1)
  • Motorized hands-free tuning in 193 – 2 300 nm or 2 300 – 16 000 nm range
  • PC control via USB port (RS232 is optional) and LabVIEW™ drivers
  • Remote control via keypad


  • Nonlinear spectroscopy: vibrational-SFG, surface-SH, CARS, Z-scan
  • Pump-probe experiments
  • Laser-induced fluorescence (LIF)
  • Other laser spectroscopy applications

Travelling Wave Optical Parametric Generators (TWOPG) are an excellent choice for researchers who need an ultra‑fast tunable coherent light source from UV to mid IR.


The units can be divided into several functional modules:

  • optical parametric generator (OPG);
  • diffraction grating based linewidth narrowing system (LNS);
  • optical parametric amplifier (OPA);
  • electronic control unit.

The purpose of the OPG module is to generate parametric superfluores-cence (PS). Spectral properties of the PS are determined by the properties of a nonlinear crystal and usually vary with the generated wavelength.

In order to produce narrowband radiation, the output from OPG is narrowed by LNS down to 6 cm⁻¹ and then used to seed OPA.

Output wavelength tuning is achieved by changing the angle  of the nonlinear crystal(s) and grating. To ensure exceptional wavelength reproducibility, computerized control unit driven precise stepper motors rotate the nonlinear crystals and diffraction grating. Nonlinear crystal temperature stabilization ensures long‑term stability of the output radiation wavelength.

In order to protect nonlinear crystals from damage, the pump pulse energy is monitored by built-in photodetectors, and the control unit produces an alert signal when pump pulse energy exceeds the preset value.

For customer convenience the system can be controlled through its USB type PC interface (RS232 is optional) with LabView™ drivers or remote control pad. Both options allow easy control of system settings.


Model Features
PG401 Model has a tuning range from 420 to 2300 nm and is optimized for providing highest pulse energy in the visible part of the spectrum. The wide tuning range makes PG401 units suitable for many spectroscopy application.
PG501-DFG Model has a tuning range from 2300 to 16000 nm. The PG501-DFG1 model is the optimal choice for vibrational-SFG spectroscopy setups.
Model 1) PG401 PG401-SH PG401-DUV PG501-DFG1 PG501-DFG2
Wavelength range
    DUV   193 – 209.95 nm  
    SH   210 – 340, 370 – 419 nm  
    Signal 420 – 680 nm  
    Idler 740 – 2300 nm  
    DFG   2300 – 10000 nm 2300 – 16000 nm
Pulse energy 2) > 1000 µJ at 450 nm > 100 µJ > 50 µJ at 200 nm > 250 µJ at 3700 nm
> 50 µJ at 10000 nm
> 250 µJ at 3700 nm
> 90 µJ at 10000 nm
Pulse duration 15 ps 12 ps 20 ps
Repetition rate 50 Hz
Linewidth < 6 cm-1 < 9 cm-1 < 6 cm-1

1 ) Due to continuous improvement, all specifications are subject to change without notice. Parameters marked typical are not specifications. They are indications of typical performance and will vary with each unit we manufacture. Unless stated otherwise, all specifications are measured at 450 nm for PG401 units, 3000 nm for PG501 units and 300 nm for PG401SH units and for basic system without options.

2) See tuning curves for typical pulse energies at other wavelengths. Higher energies are available, please contact Ekspla for more details.

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TOPAG Lasertechnik GmbH
Nieder-Ramstädter Str. 247
64285 Darmstadt, Germany
Phone: +49 6151 4259 78
Fax: +49 6151 4259 88