[EKSPLA]
PGx11 series

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Description

PGx11 series optical parametric devices employ advanced design concepts in order to produce broadly tunable picosecond pulses with nearly Fourier-transform limited linewidth and low divergence. High brightness output beam makes the PGx11 series units an excellent choice for advanced spectroscopy applications.

Optical layout of PGx11 units consists of Synchronously pumped Optical Parametric Oscillator (SOPO) and Optical Parametric Amplifier (OPA). SOPO is pumped by a train of pulses at approx. 87 MHz pulse repetition rate. The output from SOPO consists of a train of pulses with excellent spatial and spectral characteristics, determined by the SOPO cavity parameters.

OPA is pumped by a single pulse temporally overlapped with SOPO output. After amplification at SOPO resonating wavelength, the PGx11 output represents a high intensity single pulse on top of a low-intensity train, while in all other spectral ranges (idler for PG411 and PG711, signal for PG511, also DFG stages) only a single high intensity pulse is present.

Microprocessor based control system provides automatic positioning of relevant components, allowing hands free operation. Nonlinear crystals, diffraction grating and filters are rotated by ultra-precise stepper motors in microstepping mode, with excellent reproducibility.

Precise nonlinear crystal temperature stabilization 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 USB interface (RS232 is optional) from a personal computer (PC) using supplied LabView™ drivers.

Available standard models are summarized in a Specifications table below. Please inquire for custom-built versions.

Feature

  • High brightness picosecond pulses at up to 1 kHz pulse repetition rate
  • Nearly Fourier-transform limited linewidth
  • Low divergence <2 mrad
  • Hands-free wavelength tuning
  • Tuning range from 193 nm to 16000 nm
  • Remote control via keypad
  • PC control using USB (RS232 is optional) and LabVIEW™ drivers

Related Applications

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

Specification
ModelPG411  PG411‑SH  PG411‑SH‑DUVPG511-DFGPG711PG711-DFG
OPA SPECIFICATIONS 1)
Output wavelength tuning range
    SH, DUV 210–420 nm 193–420 nm
    Signal 420–709 nm 725–1000 nm 1550–2020 nm
    Idler 710–2300 nm 1140–2000 nm 2250–3350 nm
    DFG 2300–10000 nm 3350–16000 nm
Output pulse energy 2)
    SH, DUV 100 µJ 3) 50 µJ 3)
    Signal 700 µJ 500 µJ
    Idler 4) 250 µJ 100 µJ
    DFG 10 µJ 5)
Pulse repetition rate 10 Hz 10 Hz 1000 Hz
Linewidth < 2 cm-1 6) <2 cm-1 < 0.5 cm-1
Typical pulse duration 7) 15 ps 20 ps 70 ps
Scanning step
    SH, DUV 0.01 nm
    Signal 0.02 nm
    Idler 0.1 nm
    DFG 1 nm
Pulse contrast 8) 500 : 1 106 : 1
Typical beam diameter 9) ~ 4 mm ~ 3 mm
Beam divergence 10) < 2 mrad
Beam polarization 10)
    SH, DUV vertical
    Signal horizontal vertical horizontal
    Idler vertical horizontal vertical
    DFG horizontal horizontal
PUMP LASER REQUIREMENTS
Recommended pump source PL2251A + APL + H411 PL2251A + APL + H511 PL2210B-TR
Min. pump energy or power 11)
    at 1064 nm 2 mJ (10 mJ) 5W (2.5 mJ)
    at 532 nm 5 mJ (8 mJ)
    at 355 nm 5 mJ (8 mJ)
Pulse duration 12) 30 ps 90 ps
Bream polarization at pump wavelength vertical horizontal
Beam size 13) 7 mm 2.5 mm
Beam divergence < 1 mrad
Beam profile homogeneous, without hot spots
PHYSICAL CHARACTERISTICS
Size (W x L x H) 456 x 1026 x
273 mm
456 x 1226 x 273 mm 456 x 1026 x
273 mm
456 x 1226 x
273 mm
OPERATING REQUIREMENTS
Room temperature 15-30 °C
Room temperature stability ± 2 °C
Mains voltage 90-240 V single phase, 47-63 Hz
Power consumption < 300 W

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 PG411 units, 800 nm for PG511 units, and 1620 nm for PG711 units. 2) Pulse energies are specified at selected wavelengths. See typical tuning curves for pulse energies at other wavelengths. 3) Measured at 280 nm for SH and 200 nm for DUV. 4) Measured at 1000 nm for PG411 units, 1620 nm for PG511, and 3000 nm for PG711 units. 5) Measured at 10000 nm. 6) <2 cm-1 in signal (420-709 nm) and <4 cm-1 in idler (710-2300 nm). 7) Estimated FWHM assuming pump pulse duration 30 ps at 1064 nm for PG411 and PG511 units, and 90 ps at 1064 nm for PG711 units. 8) Ratio of intensity of single pulse with respect to residual pulse train. In SH or DFG ranges pulse contrast is better than 10⁶ : 1. 9) Beam diameter is measured at 1/e² level and can vary depending on the pump pulse energy. 10) Full angle measured at FWHM level. 11) The first number represents pulse train energy or power, while the value in brackets represents single pulse energy. 12) At FWHM level. Inquire for other available pulse duration options. 13) Beam diameter measured at 1/e² level.


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