Lower energy lasers - Geola - lasers and holography experts

LOWER ENERGY SLM Nd LASERS

The Geola G-MINI series is a family of compact single master-oscillator Nd:YAG, Nd:YLF or Nd:YAP lasers producing emissions covering fundamental spectrum from 1047 to 1342 nm.

G-Mini series

The G-MINI series is family of compact flash lamp or laser diode pumped Nd:YAG, Nd:YLF or Nd:YAP lasers producing emissions in the nanosecond regime. Lasers are based on Single Longitudinal Mode linear, telescopic or ring type master-oscillator design. Single Longitudinal Mode module is installed that narrows spectral linewidth and provides long pulse coherence length. The lasers produce TEM00 near diffraction limited radiation at a variety of energies, wavelengths and repetition rates. Design features include a highly stable passively or EO Q-switched oscillators. SuperINVAR based resonator framing is acomplished with multi-point active temperature distribution control of laser breadboard giving output energy stability only expected with more expensive compact diode pumped lasers.

Fundamental lasing is of wide choice and frequency conversion to the 2nd, 3rd and 4th harmonics gives variety of lasing wavelengths.

Fundamental, nm		1047	1053	1064	1079	1313	1319	1338	1342
Harmonics, nm	2^nd	524	527	532	540	657	660	669	671
	3^rd	349	351	355	360	438	440	446	447
	4^th	262	263	266	270	328	330	335	335

Optional LabWindowsTM or LabViewTM based PC control for laser function adjustment is available included an output energy plot option.

Typical Laser Ablation Spots and Energy Stability Diagrams

System Features

Unique cost efficient SLM Master-oscillator design based on self seeding technique
The Mode Hoping option providing that only one mode exist on the shot is applicable
lash lamp or DPSS pumped modules
PC control via RS232 using advanced Geola software or LabView drivers (optional)
Lasers are CE marked according to IEC 60825-1:2001/EN 60825-1:2001
Low electrical consumption

Technical Parameters

Advised Model

G-MINI-x

Output Wavelengths⁽¹⁾:

1342 nm

671 nm

447 nm

1338 nm

669 nm

446 nm

1319 nm

660 nm

440 nm

1313 nm

657 nm

438 nm

1079 nm

540 nm

360 nm

1064 nm

532 nm

355 nm

1053 nm

527 nm

351 nm

1047 nm

524 nm

349nm

Output energy⁽²⁾:

2-50 mJ

0.9-25 mJ

0.4-9 mJ

Pulse duration FWHM⁽³⁾:

1 ... 50 ns

Energy Stability (Std.Dev.)⁽⁴⁾:

~ 1%

~ 2 %

~ 3 %

Beam Divergence:

Near Diffraction Limit for beam size

Line width⁽⁵⁾:

< 0.1 ... 0.001 cm^-1

Beam Diameter (1/e²):

~ 1 ... 6 mm

Beam Profile:

Near Gaussian

Pulse Repetition Rate⁽⁶⁾:

1 ... 50 Hz

Beam Pointing:

~ 150 urad

Optical Pulse buildup time⁽⁷⁾:

< 200 ns

Polarization:

Horizontal or Vertical, > 1:100

Q-Switching Type:

Passive or E-O

Optical Pulse Jitter⁽⁸⁾:

~ 500 ns ... 5 us for Passive Q-Switch and ~ 0.5 ... 2 ns for E-O Q-Switch

Triggering:

External/Internal

DIMENSIONS

Laser Head:

(L x W x H)

< 30 x 18 x 18 cm ... < 100 x 25 x 18 cm

Power & Cooling Cabinet:

(L x W x H)

~ 55 X 55 X 60 CM

Umbilical Length:

3 m

ENVIRONMENTAL REQUIREMENTS

Cooling requirements:

(Water flow for 20^_oC water temperature)

< 10 liters/minute

Room temperature:

18-25^_oC (recommended)

Relative Humidity:

(non-condensing)

< 70 %

Mains Voltage:

210...240 VAC, since phase 50/60 Hz

Power Consumption:

~ 0.5... 2.5 kW

^{(Geola reserves the right to change specifications without notice)}

⁽¹⁾ Select required wavelength from the list.

⁽²⁾ Choose required energy level from the range.

⁽³⁾ Choose required pulse duration from the range.

⁽⁴⁾ Std.Dev., for 1000 shots at 10Hz repetition rate.

⁽⁵⁾ The Mode Hoping option providing that only one mode exist on the shot is possible.

⁽⁶⁾ Choose required repetition rate from the range.

⁽⁷⁾ In respect to External sync pulse signal.

⁽⁸⁾ In respect to External sync pulse signal.