Quanta-Ray Pro Series


  • Repetition rates from 1 to 50 Hz with energies in excess of 2.5 J per pulse
  • Gold elliptical pump chambers
  • Sealed beam paths
  • High-quality, high-damage-threshold optics from Spectra-Physics’ dedicated in-house coating lab

Quanta-Ray Pro Series Pulsed Nd:YAG Lasers

Quanta-Ray® Nd:YAG lasers are recognized world wide for their unsurpassed performance, reliability and quality. The Quanta-Ray Pro Series are oscillator plus amplifier YAG lasers featuring a dual rod oscillator pump chamber configuration. This proprietary design provides compensation for thermally-induced birefringence in the YAG rod, providing an output beam quality that is unique on the market.

Newly incorporated modern digital signal processing (DSP) electronics into all Quanta-Ray YAG lasers provide a number of advantages for users.

  • A direct digital interface and GUI enhances the reliability and convenience of using Quanta-Ray Pro, maximizing the time spent doing experiments.
  • Variable repetition rates are now possible with digital control. This digital control lets the user set the rep rate to integer-fractions of the lamp pulse frequency. Thus, the thermal steady-state in the resonator is maintained by a constant flash lamp frequency, but the rep rate of the light output can be varied.
  • The digitally-controlled DivergenceLok™ accessory allows the ability to extend flash lamp lifetimes. This feature also maintains the quality and divergence properties of the beam over an extended period of use by compensating for the natural decay in lamp efficiency as a function of accumulated shots.
  • The DivergenceLok feature also stabilizes the thermal balance in the Nd:YAG gain medium. Changes in output beam polarization over time are avoided, with the result that both the efficiency of harmonic generation and the higher harmonic beam shapes remain constant during the course of an experiment.
  • Additionally, our unique BeamLok accessory for active beam pointing stabilization can now be set and monitored directly from your PC.

The traditional features and advantages that have made Quanta-Ray the world's leading pulsed Nd:YAG laser are still integral to our design philosophy for laser quality. These features include dual-rod oscillators, gold-coated elliptical pump chambers, internal sealed beam path and high-damage-threshold optics from Spectra-Physics’ advanced coatings lab.


Amplifier and OPCPA seeding
THz spectroscopy and imaging
Optical coherence tomography
Ultrafast spectroscopy
Pump-probe measurements
Materials processing
Two-photon polymerization
Thin-film metrology
Nonlinear optics
Multiplex CARS
Surface enhanced HHG
Repetition Rate 10 Hz 30 Hz 50 Hz 10 Hz 30 Hz 50 Hz 10 Hz 30 Hz 50 Hz 10 Hz 30 Hz 50 Hz 10 Hz  
Energy (mJ/p)2
1064 nm 1250 mJ 950 mJ 650 mJ 1500 mJ 1100 mJ 750 mJ 1750 mJ 1300 mJ 900 mJ 2000 mJ 1600 mJ 1000 mJ 2500 mJ  
532 nm 650 mJ 475 mJ 300 mJ 800 mJ 550 mJ 350 mJ 900 mJ 600 mJ 400 mJ 1000 mJ 800 mJ 500 mJ 1400 mJ  
355 nm3 375 mJ 300 mJ 140 mJ 425 mJ 325 mJ 160 mJ 475 mJ 350 mJ 225 mJ 550 mJ 375 mJ 275 mJ 750 mJ  
EEO-355 nm3 400 mJ 320 mJ 160 mJ 475 mJ 350 mJ 180 mJ 550 mJ 400 mJ 250 mJ 650 mJ 425 mJ 300 mJ 850 mJ  
266 nm 140 mJ 80 mJ 40 mJ 165 mJ 85 mJ 55 mJ 175 mJ 90 mJ 65 mJ 200 mJ 110 mJ 80 mJ 250 mJ  
Wavelength Pulse Width4 Short Term Energy Stability5 Long Term Power Drift6  
1064 nm 8–12 ns ±2% <3%  
532 nm 1–2 ns <1064 nm ±3% <5%  
355 nm 2–3 ns <1064 nm ±4% <6%  
266 nm 3–4 ns <1064 nm ±8% <10%  
Spatial Mode Profile7 Standard Fit ESM Fit8  
Near Field (1 m) >70% Contact Spectra-Physics  
Far Field (∞) >95% Contact Spectra-Physics  
Modulation9 <40% Contact Spectra-Physics  
Beam Diameter10 Pro-200 <10 mm Pro-300 <13 mm  
BeamLok Specifications Standard Pro Series With BeamLok/D-Lok  
Beam Pointing Stability11 <±50 µrad <±25 µrad  
Beam Divergence12 <0.5 mrad <2 x initial level  
Lamp Lifetimes13 30 million pulses 40 million pulses  
Standard <1.0 cm-1  
Injection Seeded14 <0.003 cm-1  
Timing Jitter15 <0.5 ns  
 Quanta-Ray Pro Series  
Water Service16 10 Hz – 3.8 liters/min (1.0 US gallons/min)
30 Hz and 50 Hz – 7.6 liters/min (2.0 US gallons/min)
Electrical Service17,19 10/30/50 Hz: <30 A/<40 A/<50 A  
Voltage18 190–260 V, single phase, 50/60 Hz  
Umbilical Length 3 m (10 ft)  
Remote Cord Length 3 m (10 ft)  
Weight Laser Head 84 kg (185 lb)
Power Supply 114 kg (250 lb)
Power Supply Dimensions (L x W x H) 76.99 x 64.00 x 75.74 cm
(30.3 x 25.2 x 29.8 in)

1. All specifications, unless otherwise stated, are for Q-switched 1064 nm operation and are subject to change without notice.
2. Harmonic energies are specified after separation using dichroic mirror pairs. It is also assumed that polarization of measured harmonic is in vertical polarization,
   making an “S” polarized reflection from dichroics. 532 nm energies are specified using Type II SHG. 355 nm energies are specified using Type II doubler.
   Using a Type I doubler in tripling process will result in a 10% increase in published 355 nm specification except for the following-models: Pro-250-10, Pro-230-10.
3. Addition of LBP option for pumping Scan Series OPOs can result in a 5% loss of 355 nm energy. EEO - high UV output option designed for OPO pumping,       
    includes injection seeder, harmonic generator, 355 nm dichroic separators, and beam dump.
4. Normal full width half maximum (FWHM) for Pro series lasers is 10-12 ns except for Pro 270-10, Pro 290-10, and Pro 350-10 versions which is 8-10 ns. 
    The optional short pulse mode reduces the 1064 nm pulse width to approximately 2.5 ns  and reduces the energy by approximately 10%.
    (Short pulse mode available on seeded versions on special request only).
5. Pulse-to-pulse stability for >99% of pulses, measured over a 1 hour period.
6. Over 8 hour period with temperature variations of <±3°C.
7. Near field spatial profiles measured <1 m from laser using commercially available beam diagnostic system. 70% refers to correlation between actual beam
    profile and least squares best fit Gaussian profile. Far field profiles are measured at focal plane of a 2 m focal length lens and measured between FWHM points.
   Specifications based on 10 Hz lasers. Fit to flat-top central 80% of beam near field.
8. Enhanced spatial mode options can be tailored to meet your application needs. To obtain >85% Gaussian fits, energy can be reduced by 50%.
    Contact Spectra-Physics to establish specifications.
9. Refers to maximum deviation from best fit Gaussian profile measured in near field (1 m) between FWHM points.
10. Actual beam diameter will vary depending on laser configuration.
11. Long term average pointing drift after warm up, over 8 hours ±-3°C. Shot-to-shot pointing stability <±25 μrad. Angle measured is polar angle.
12. Full angle measured at FWHM points.
13. IR energy within 10% of specified value.
14. Insertion losses for systems using model 6350 injection seeder are <15% at 1064 nm, 532 nm, and 266 nm.
15. RMS jitter from Q-switched sync pulse at 10 Hz. Jitter is ≤1 ns RMS when using model 6350 injection seeder at 10 Hz and ≤1.5 ns at 30 Hz.
16. Minimum pressure 40 psi. maximum pressure 60 psi.
17. Input transformer has taps at 190, 200, 210, 220, 230, 240, 250, and 260 V. Once tap is chosen, actual input voltage differing by
      more than ±10% may affect operation of laser.
18. Measured on request.
19. Max current draw of laser.

Quanta-Ray Pro Series Dimensions 

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