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.
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.
AVAILABLE WAVELENGTHS
| Red, nm | Green, nm | Blue, nm |
| Standard | ||
| 660 | 532 | 440 |
| On demand | ||
| 671 | 540 | 447 |
| 669 | 527 | 446 |
| 657 | 524 | 438 |
RGB-ALPHA D Laser in action
In addition to constituting highly versatile laboratory tools all ALPHA series lasers are rigorously designed to meet the high stability standards required for scientific and technological applications.
BEAM CHARACTERISTICS
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-ALPHA-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.
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.
The 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 pulsed DPSS laser at workIn 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
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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