PG500 series picosecond OPGs pumped by the second harmonic

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PG500 series picosecond OPGs pumped by the second harmonicFor applications requiring high energy in near IR the PG500 series picosecond optical parametric generators OPG/OPA are an excellent and cost-efficient choice, as they require less powerful and hence less expensive lasers.

Features

  • Unprecedented tuning range 0.68–16 µm
  • Up to 15% conversion efficiency (signal + idler)
  • Narrow linewidth
  • Motorized “hands free” tuning in 680 nm – 10 µm range
  • Remote control via keypad
  • PC control using RS232 and LabView drivers

Applications

  • Nonlinear optics
  • Nonlinear spectroscopy: SFG, SH, CARS
  • Pump-probe experiments
  • Vibrational spectroscopy
  • Laser-induced fluorescence
  • Other laser spectroscopy applications
  • Your application is welcome…
PG500 series optical parametric generators (OPG) are an excellent choice for researchers who need picosecond tunable source from UV to mid IR. Due to the unique broad tunability range these devices are a very attractive and cost-efficient alternative to other tunable laser radiation sources.
Microprocessor based control system provides precisione automatic positioning of relevant components allowing hands-free operation.
To ensure exceptional reproducibility, accurate step motors driven by computerized control unit rotate nonlinear crystals and diffraction grating. Precise nonlinear crystal temperature stabilization ensures long-term stability of output radiation. In order to protect nonlinear crystals from damage the pump pulse energy is monitored by built-in photodetectors and alerting sound signal.
For customer convenience system is controlled through its RS232 type PC interface with LabView drivers (included) or a user-friendly remote control pad. Both options allow easy control of the system settings.
 
PG501 – up to 1 mJ pulse energy in near-IR range

PG501 is the compact basic model of PG500 series. The unit includes:

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

Two BBO crystals are used for OPG and OPA stages. The diffraction grating narrows the OPG output linewidth down to 6 cm-1. Narrowed and spatially filtered pulse seeds the OPA. The signal and idler waves are separated by polarizer and are directed to separate output ports. Such advanced OPG and OPA’s set-up ensures high conversion efficiency and good output beam spatial profile.
A microprocessor-based control unit provides hands-free OPG operation and exceptional output wavelength reproducibility. Precise temperature stabilization of the nonlinear crystals assures a long-term stability of the output parameters.
A built-in pump pulse energy monitor alerts the user if the pump intensity approaches the preset value.
For budget customers model without SLNS is available (PG502).

PG500_layout.jpg
PG501 model picosecond OPG functional layout

 
PG501-DFG – unprecedented tuning range up to 16 µm
PG501-DFG1 model combines an OPG and difference frequency generator (DFG) into a single unit and features extremely wide wavelength coverage. Tuning range up to 10 µm is achieved by mixing the OPG idler wave at 1.19–1.98 µm with the
1064 nm beam of a picosecond Nd:YAG laser in AgGaS2 crystal. Good OPG output beam spatial profile and relay imaging (RI) of 1064 nm beam ensure high DFG conversion efficiency, providing up to >300 µJ per pulse in the 3–4 µm range. The whole tuning range is covered without any optics changes.
Two models with different output energy specifications are available: PG501-DFG1 and PG501-DFG1P.
With GaSe crystal the DFG tuning range can be extended up to 16 µm (up to 18 µm upon request).
 
PG500DFG_layout.jpg
PG501-DFG model picosecond OPG functional layout