Transform Limited Broadly Tunable Picosecond OPA
FEATURES
▶ 2 cm-1 or 0.8 cm-1 linewidth
▶ High brightness picosecond pulses at 50 Hz or 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 nmto 16000 nm
▶ PC control using USB (RS232 is optional) and LabVIEW™ drivers
▶ Remote control via keypad
APPLICATIONS
▶ Time resolved pump-probe spectroscopy
▶ Laser-induced fluorescence
▶ Infrared spectroscopy
▶ Nonlinear spectroscopy: vibrational-SFG, surface-SH,Z-scan, pump probe
▶ Other laser spectroscopy applications
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.
Three models designed for pumping by up to the 3rd harmonic of Nd:YAG laser are available.
Available models
Model Features
PG411
Model has a tuning range from 410 to 2300 nm and is optimized for providing highest pulse energy in the visible part of the spectrum. When combined with an optional Second Harmonic Generator (SHG) and Sum Frequency Generator (-DUV), it offers the widest possible tuning range – from 193 to 2300 nm.
PG511
Model has a tuning range 2300 – 10000 nm. PG411 and PG511 models are designed to be pumped by PL2230 series lasers with a 50 Hz pulse repetition rate.
PG711
Model has 1 kHz pulse repetition rate and uses DPSS mode-locked laser of the PL2210 series for pumping. When pumped with pulses of 90 ps duration, linewidths of less than 1 cm⁻¹ were measured in the spectral range up to 16 µm, which makes this device an excellent choice for time-resolved or nonlinear infrared spectroscopy.
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 through its USB type PC interface (RS232 is optional) with LabView™ drivers or a remote control pad. Both options allow easy control of system settings.
Available standard models are summarized in a table below. Please inquire for custom-built versions
SPECIFICATIONS 1)
Model
PG411 PG411‑SH PG411‑SH‑DUV PG511‑DFG PG711 PG711‑DFG Output wavelength tuning range
SH, DUV
–
210–410 nm
193–410 nm
–
Signal
410–709 nm
–
1550–2020 nm
Idler
710–2300 nm
–
2250–3350 nm
DFG
–
2300–10000 nm
–
3350–16000 nm
DFG2
(up to 16000 nm)
–
inquire
–
Output pulse energy 2)
SH, DUV
–
150 µJ 3)
100 µJ 3)
–
Signal
700 µJ
–
300 µJ
Idler 4)
250 µJ
–
100 µJ
DFG
–
> 200 µJ at 3700 nm,
>50 µJ at 10000 nm
–
10 µJ 5)
Max pulse repetition rate
50 Hz
50 Hz
1000 Hz
Linewidth
< 2 cm-1 6)
< 2 cm-1
< 0.8 cm-1
< 1 cm-1
Linewidth Idler
< 4 cm-1 6)
–
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
Typical beam
diameter 8)
~ 4 mm
~ 9 mm
~ 3 mm
Beam divergence 9)
< 2 mrad
Beam polarization 9)
SH, DUV
–
vertical
–
Signal
horizontal
vertical
horizontal
Idler
vertical
horizontal
vertical
DFG
–
horizontal
–
horizontal
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 and for basic system without options.
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) Beam diameter is measured at 1/e2 level and can vary depending on the pump pulse energy.
9) Full angle measured at FWHM level.
SPECIFICATIONS 1 )
Model
PG411
PG411‑SH
PG411‑SH‑DUV
PG511‑DFG
PG711
PG711‑DFG
PUMP LASER REQUIREMENTS
Recommended pump source
PL2231A + APL2100-TRAIN-H411
PL2231 + H500- APL2100-TRAIN
PL2210B-TR + APL2100-TRAIN-H711
Min. pump energy or power 10)
at 1064 nm
–
2 mJ
(10 mJ)
2.5 mJ at 1 kHz 5 W at 88 MHz
at 532 nm
–
5 mJ (8 mJ)
–
at 355 nm
5 mJ (10 mJ)
–
Pulse duration 11)
30 ps
90 ps
Bream polarization at pump wavelength
vertical
horizontal
Beam size 12)
7 mm
2.5 mm
Beam divergence
< 0.5 mrad
Beam profile
homogeneous, without hot spots
PHYSICAL CHARACTERISTICS
Size (W × L × H)
456 × 1026 ×
244 mm
456 × 1226 × 244 mm
PL2231: 456 × 1026 × 244 mm
H500-APL2100-TRAIN:
456 × 1026 × 244 mm
456 × 1226 ×
244 mm
APL2100- TRAIN-H711
456 × 1026 × 244
mm
OPERATING REQUIREMENTS
Room temperature
15 – 30 °C
Room temperature stability
± 2 °C
Power requirements
100 – 240 V single phase, 47 – 63 Hz
Power consumption
< 300 W
10) The first number represents pulse train energy or power, while the value in brackets represents single pulse energy.
11) At FWHM level. Inquire for other available pulse duration options.
12) Beam diameter measured at 1/e² level
RECOMMENDED UNITS ARRANGEMENT ON OPTICAL TABLE
TUNING CURVES
Note: The energy tuning curves are affected by air absorption due narrow linewidth. These pictures present pulse energies where air absorption is negligible.
OUTLINE DRAWINGS
OUT PUTS P ORTS
Model
L, mm a, mm b, mm c, mm Port 1 Port 2 Port 3 PG411
1026
×
411
×
420 – 709 nm,
710 – 2300 nm
420 – 709 nm, 710 – 2300 nm
–
PG411‑SH
1226
×
411
×
420 – 709 nm,
710 – 2300 nm
210 – 419 nm, 420 – 709 nm,
710 – 2300 nm
–
PG411‑SH/DUV
1226
235
411
331
420 – 709 nm,
710 – 2300 nm
210 – 419 nm, 420 – 709 nm,
710 – 2300 nm
192 – 209.95 nm
ORDERING INFORMATION
Note: Laser must be connected to the mains electricity all the time. If there will be no mains electricity for longer that 1 hour then laser (system) needs warm up for a few hours before switching on.