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finesse pure CEP

Specification Features Downloads

The newly upgraded finesse pure CEP (patented technology) brings together the ultra-low noise and high pointing stability of the finesse pure together with CEPLoQ™ technology. The ability to receive a signal from the f-to-2f interferometer removes the cost and complexity associated with the use of an AOM and offers a faster and deeper modulation capability to provide a more stable CEP stabilisation lock. The latest members of the finesse family will continue to drive innovative research through world-leading specifications, combined with dependable reliability.


Power14 W - 16 W Wavelength532 nm
Spectral Bandwidth50 GHz Coherence Length~6 mm
Power Stability<0.05% RMS (<10 W <0.1%) Noise<0.02% RMS (<10 W <0.03%)
Pointing Stability<2 µrad/°C Spatial ModeTEM00
M2<1.1 Divergence<0.4 mrad
Beam Diameter2.25 mm ± 0.25 mm Polarisation Ratio>100:1
Polarisation DirectionHorizontal (vertical available upon request) Beam Angle<1 mrad
Operating Temperature20 - 40°C Weight3.6 kg
Umbilical Length2 m Warmup Time<10 minutes
Laser ClassClass IV Download Specification (698KB)

The direct feedback mechanism allows modulation of the pump power with the following specifications:

Modulation depth:                          +/- 1%  
Modulation Bandwidth:                  ~1 MHz
Phase behaviour:                           
100 kHz                ~20 degrees
400 kHz                ~35 degrees
750 kHz                <90 degrees


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