RGB Lasers

Geola is probably the only company manufacturing pulsed SLM RGB lasers with coherence length of more than 3 meters. Some of those our lasers are used by embossed holograms manufacturers for hologram origination.

  • The RGB-ALPHA series is family of compact master oscillator flash lamp or diode pumped Nd: YAG, YAP or YLF lasers producing emissions in the nanosecond regime. Design features include a highly stable passively or EO Q-switched oscillator and frequency conversion to the second and/or third harmonics by means of various NLO crystals. The lasers produces Single Longitudinal Mode and TEM00 near diffraction limited radiation at a variety of energies, wavelengths and repetition rates.
  • Fundamental lasing is at 1047, 1053, 1064 or 1079 nm and at 1313, 1319, 1338 or 1342 nm. The RGB-ALPHA laser series emits in the deep IR, Red and Blue wavelengths simultaneously (or separately upon request). The RGB-ALPHA laser series delivers pulses at 5 wavelengths simultaneously in the 1.3um IR, IR, Red, Green and Blue (or separately upon request). The standard RGB-ALFA series emits at 440nm, 532nm and 660nm.
Category:
RGB_replace_small2

The RGB-ALPHA series is family of compact master oscillator flash lamp pumped Nd:YAG lasers producing emissions in the nanosecond regime. Design features include a highly stable passively Q-switched oscillator and frequency conversion to the second and/or third harmonics by utilising most efficient NLO crystals.

The laser produces Single Longitudinal Mode and TEM00 near diffraction limited radiation at a variety of energies, wavelengths and repetition rates. Laser models with multimode flat-top output are also available on request.

Download RGB pulsed laser leaflet

AVAILABLE WAVELENGTHS

Red, nm Green, nm Blue, nm
Standard
660 532 440
On demand
671 540 447
669 527 446
657 524 438
Pulsed RGB laser at workPulsed RGB laser at work

In addition to constituting highly versatile laboratory tools all ALFA series lasers are rigorously designed to meet the high stability standards required for scientific and technological applications.

BEAM CHARACTERISTICS

Typical Temporal Pulse Shape RGB ALFA
Typical Transversal Shape At 660nm RGB ALFA
Typical Transversal Shape At 440nm RGB ALFA

SYSTEM FEATURES

  • Laser beam characteristics optimized for successful hologram recording: smooth beam, coherence length exceeding 2m;
  • Pure Solid State laser design;
  • Active cavity stabilization systems;
  • Low maintenance cost;
  • No water consumption;
  • Low electrical consumptions;
  • PC control via RS232 using advanced Geola software or LabView drivers;
  • Lasers are CE marked according to IEC 60825-1:2001/EN 60825-1:2001.
Technical specifications
Base model Parameter
Output Wavelength: 660nm 532nm 440nm
Output energy(1)
RGB-ALPHA: 4mJ 6mJ 2.5mJ
RGB-ALPH-A1 6mJ 6mJ 4mJ
Pulse duration: 50ns 35ns 50ns
Energy Stability (Std.Dev.)(2): < 2 / 2 / 3 %
Beam Divergence: Near Diffraction Limit for beam size
Line width: < 0.003 cm-1
Beam Diameter (1/e²): ~ 5 … 9 mm
Beam Profile(3): Near Gaussian in near field and Gaussian in far field
Pulse Repetition Rate(4): 30 / 60 Hz
Beam Pointing: < 150 urad
Polarization: Horizontal or Vertical, > 98%
Q-Switching Type: Passive
Optical Pulse Jitter(5): < 10 us
Triggering: External/Internal
  Dimensions
RGB-ALPHA
Laser Head: (L x W x H) 1080 x 455 x 180 mm
Power supply rack: (L x W x H) 600 x 550 x 550 mm
RGB-ALPHA-A1
Laser Head: (L x W x H) 1052 x 405 x 174 mm
Power supply rack: (L x W x H) 600 x 550 x 550 mm
Umbilical Length: 2.5 m
  Environmental Requirements
Room temperature: 22-23oC
Relative Humidity: (non-condensing) < 75 %
Mains Voltage(6): 210…240 VAC, 50/60 Hz
Power Consumption: ~ 2.5… 4 kW

(Geola Digital reserves the right to change specification without notice)

(1) For higher energies an amplification cascades could be installed on request.
(2) Std.Dev. for 10.000 shots at 30Hz repetition rate.
(3) Flat-Top harmonic outputs could be provided on request.
(4) Other repetition rates could be available on request.
(5) Std.Dev., with respect to External sync pulse signal.
(6) Models with 60Hz repetition rate requires 380VAC mains.

laser+rack

All RGB-ALPHA lasers can be equipped with add-ons containing White-Light combiner, programmable shutter and energy meters:

  • Beam attenuation in each RGB channel;
  • PC-driven shutters in each channel having two programmable mode of operations:
    • Burst mode (from 1 pulse to 100000 pulses),
    • Energy accumulation mode (from energy of 1 pulse to tens of Joules).
  • Energy meters in each Red Green and Blue channel showing real output energies;
  • White light combiner and white light output (for color photopolymer applications).
  • Top-Hat beams can be provided on request.

RGB-ALFA-D-laser-smallThe RGB-ALPHA-D series is family of compact master oscillator diode-pumped Nd:YAG lasers producing emissions in the nanosecond regime. Design features include an electro-optical Q-Switch and frequency conversion to the second and/or third harmonics by utilising most efficient NLO crystals.

The laser produces Single Longitudinal Mode and TEM00 near diffraction limited radiation at a variety of energies, wavelengths and repetition rates. Laser models with multimode flat-top output are also available on request.

AVAILABLE WAVELENGTHS

Red, nm Green, nm Blue, nm
Standard
660 532 440
On demand
671 540 447
669 527 446
657 524 438
rgb-laser-exit-shortRGB pulsed DPSS laser at work

In addition to constituting highly versatile laboratory tools all ALFA series lasers are rigorously designed to meet the high stability standards required for scientific and technological applications.

BEAM PROFILES

R-G-B-profile

SYSTEM FEATURES

  • Laser beam characteristics optimized for successful hologram recording: smooth beam, coherence length exceeding 2m;
  • Pure Solid State laser design;
  • Active cavity stabilization systems;
  • Low maintenance cost;
  • No water consumption;
  • Low electrical consumptions;
  • PC control via RS232 using advanced Geola software or LabView drivers;
  • Lasers are CE marked according to IEC 60825-1:2001/EN 60825-1:2001.

TECHNICAL SPECIFICATIONS

Base model RGB-ALFA-D
Output Wavelength: 660 nm 532 nm 440 nm
Output energy(1): 4 mJ 6 mJ 2.5 mJ
Pulse duration: 45 ns 30 ns 45 ns
Energy Stability (RMS)(2): < 2 < 2  % < 3 %
Beam Divergence: Near Diffraction Limit for beam size
Line width: < 0.003 cm-1
Beam Diameter (1/e²): ~ 5 … 9 mm
Beam Profile(3): Near Gaussian in near field and Gaussian in far field
Pulse Repetition Rate(4): 60 Hz
Beam Pointing: < 150 µrad
Polarization: Horizontal or Vertical, > 98%
Q-Switching Type: EO
Optical Pulse Jitter(5): < 10 ns
Triggering: External/Internal
Dimensions
Laser Head: (L x W x H) 942 x 535 x 217 mm
Power & Cooling Cabinet:(L x W x H) 600 x 520 x 286 mm
Umbilical Length: 1.5 m
Environmental Requirements
Room temperature: 20-23oC
Relative Humidity: (non-condensing) < 75 %
Mains Voltage: 210…240 VAC, 50/60 Hz
Power Consumption: < 3.5 kW

(Geola Digital reserves the right to change specification without notice)

(1) For higher energies an amplification cascades could be installed on request.
(2) RMS for 10.000 shots at 30Hz repetition rate.
(3) Flat-Top harmonic outputs could be provided on request.
(4) Other repetition rates could be available on request.
(5) RMS with respect to External sync pulse signal.

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