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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 

PGx03 - Serie, abstimmbar

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PGx03 - Serie, abstimmbare hochrepetierende OPG Systeme

PGx03

Die OPG´s der PGx03 Serie sind für den Betrieb mit hoher Repetitionsrate (1kHz) ausgelegt und für Pumplaser der PL2210A Serie optimiert. Aufgrund des einzigartig breiten Abstimmbereichs von 210nm bis 16µm, der kurzen Pulsdauer (15-20ps) und der schmalen Linienbreite (bis <6cm-1) sind diese OPGs eine ausgezeichnete Wahl für viele spektroskopische Anwendungen.

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Tab 1

Features

  • Picosecond pulses at 1 kHz pulse repetition rate
  • Hands-free wavelength tuning
  • Tuning range from 210 nm to 16000 nm
  • Narrow linewidth <6 cm-1
  • Low divergence <2 mrad
  • Remote control via keypad
  • PC control using USB (RS232 is optional) and LabVIEW™ drivers

Applications

  • Time resolved pump-probe spectroscopy
  • Laser-induced fluorescence
  • Infrared spectroscopy
  • Nonlinear spectroscopy: vibrational-SFG, surface-SH, CARS, Z-scan
  • Other laser spectroscopy applications

The PGx03 series Optical Parametric Generators (OPG) are designed to be pumped by 1 kHz mode-locked lasers with 1 W average power. An excellent choice is the PL2210A series mode‑locked picosecond laser from EKSPLA.

The optical design is optimised to produce low divergence beams with moderate linewidth (typically 12 cm⁻¹) at approximately 20 ps pulse duration. These devices are an excellent choice for many spectroscopic applications due to the unique broad tunability range from 210 to 16000 nm. Upon request, the optical layout can easily be modified for pumping by other mode-locked lasers with high pulse energy or longer pulse duration. Three models designed for pumping by up to the 3rd harmonic of Nd:YAG laser are available.

The PG403 model has a tuning range from 410 to 2300 nm and is optimised for providing the highest pulse energy in the visible part of the spectrum. When combined with an optional Second Harmonic Generator (SHG), it offers the widest possible tuning range – from 210 to 2300 nm.

The PG503 model has a tuning range from 700 to 2300 nm and the highest pulse energy in the near-IR spectral range. The PG503 is a cost-effective alternative to the narrow-band mode-locked Ti:S lasers.

The PG703 model is targeted for infrared spectroscopy applications. The tuning range reaches from 1400 to 4450 nm and can be extended to 16000 nm using an optional Difference Frequency Generator (DFG) stage.

A microprocessor based control system provides automatic positioning of relevant components for hands-free operation. Nonlinear crystals, diffraction grating and filters are rotated by ultra-precise stepper motors in the microstepping mode with excellent reproducibility. Precise nonlinear crystal temperature stabilisation ensures long-term stability of generated wavelength and output power.

For customer convenience, the system can be controlled using a user-friendly remote control pad or through a USB interface (RS232 is optional) from a personal computer using supplied LabVIEW™ drivers. Available standard models are summarised in a specifications sheet below. Please inquire for custom-built versions.

Tab 2
Specifications 1)

ModelPG403PG403-SHPG503PG703PG703-DFG
OPG specifications
Output wavelength tuning range
SH - 210-410 nm - - -
Signal 410-709 nm 700-1000 nm 1550-2020 nm 1550-2020nm
Idler 710-2300 nm 1150-2200 nm 2250-3350 nm 2250-3350 nm
DFG - - - - 3350-16000 nm
Output pulse energy 2)
SH 3) - 10 µJ - - -
Signal 50 µJ 70 µJ 60 µJ
Idler 4) 15 µJ 25 µJ 20 µJ
DFG 5) - - - - 6 µJ
Pulse repetition rate 1000 Hz
Linewidth < 12 cm-1 < 12 cm-1 < 6 cm-1
Typical pulse duration 6) 15 ps 20 ps 20 ps
Scanning step
SH - 0.05 nm - - -
Signal 0.1 nm
Idler 1 nm
DFG - - - - 1 nm
Typical beam size 7) ~ 3 mm
Beam divergence 8) < 2 mrad
Beam polarisation 9)
SH - vertical - - -
Signal horizontal
Idler vertical vertical horizontal vertical
DFG - - - - vertical
Pump laser requirements
Min pump energy10)
at 1064 nm - - 0.9 mJ
at 532 nm - 0.45 mJ -
at 355 nm 0.3 mJ - -
Pulse duration 11) 10-30 ps
Beam polarization at pump wavelength vertical horizontal horizontal
Beam size 11) 2-3 mm
Beam divergence < 1 mrad
Beam profile homogeneous, without hot spots, Gaussian fit > 90 %
Recommended pump source PL2210A-TH PL2210A-TH PL2210A-SH PL2210A PL2210A
Physical characteristics
Size (WxLxH) 456x605x273 mm 456x1026x273 mm 456x605x273 mm 456x605x273 mm 456x1026x273 mm
Operating requirements
Room temperature 15-30 °C
Power requirements 100-240 V single phase, 47-63 Hz
Power consumption < 120 W

1) Due to continuous improvement, all specifications are subject to change without notice. For latest product information please visit EKSPLA. 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 PG403 units, 800 nm for PG503 units, and 1620 nm for PG703 units.
2) Pulse energies are specified at selected wavelengths. See typical tuning curves for pulse energies at other wavelengths.
3) Measured at 250 nm.
4) Measured at 1000 nm for PG40x units, 1620 nm for PG503 and 3000 nm for PG703 units.
5) Measured at 5000 nm.
6) Estimated assuming 30 ps at 1064 nm pump pulse. Pulse duration varies depending on wavelength and pump energy.
7) Beam diameter at the 1/e² level. FWHM point. Can vary depending on the pump pulse energy.
8) Full angle measured at the FWHM level.
9) Separate output ports for SH, signal, idler and DFG ranges.
10) Max pump energy is limited by available non‑linear crystal sizes
11) Should be specified while ordering if non‑Ekspla pump laser is used.

 

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Tab 5
Bild 1
 Typical outside view of PGx03 series picosecond OPG
Beschreibung 1
Typical outside view of PGX03 series picosecond OPG 
Bild 2
 pgx03-series-khz-repetition-rate-picosecond-opg2
Beschreibung 2
Typical PG403-SH model tuning curve. Pump energy - 0.3 mJ at 355 nm. 
Bild 3
 Typical PG503 model tuning curve. Pump energy - 0.45 mJ at 532 nm.
Beschreibung 3
Typical PG503 model tuning curve. Pump energy - 0.45 mJ at 532 nm. 
Bild 4
 Typical PG703-DFG model tuning curve. Pump energy - 0.9 mJ at 1064 nm
Beschreibung 4
Typical PG703-DFG model tuning curve. Pump energy - 0.9 mJ at 1064 nm 
Bild 5
 Typical PG703 model tuning curve. Pump energy - 0.9 mJ at 1064 nm.
Beschreibung 5
Typical PG703 model tuning curve. Pump energy - 0.9 mJ at 1064 nm. 
Bild 6
 Arrangement of pump laser and PGx03 unit on an optical table
Beschreibung 6
Arrangement of pump laser and PGx03 unit on an optical table
Bild 7
 PGx03_external_dimensions
Beschreibung 7
PGx03_external_dimensions
Bild 8
 
Beschreibung 8
 
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Beschreibung 10