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Lithium Atom Interferometer evolution: complete solution for 888nm /100W Laser diode

Thanks to our unique mixed competencies in photonics and thermal management, we have handle a part of the practical experience development and by the way allow our customer to focus their work on a more sensitive issue.

Customer requirements

Our customer, a research institute, targeted to improve their Atom interferometer to achieve better performances. Their goal was to develop a new solid state laser emitting at 671nm. The motivation was  to replace their actual laser system  to a better cost effective one as well as achieving more power, which may be useful either for a more coherent diffraction with a larger detuning or for higher diffraction orders.

The answer is a laser based on Nd3+ ion in YVO4 pumped by a 888nm laser diode. This ion emits at 1342nm, which allows to generate the needed 671nm. We have been challenged to provide the fully thermally controlled and driven 888nm laser diode.

Our solution

Using our two competencies in Photonics and Thermal management, we have designed a complete assembly, in order to provide a turn-key solution.
First, the laser diode have been selected and the rack designed in accordance with the laser diode specifications.

This results in a water-cooled unit including management of all parameters required by our customer: Laser diode voltage and current, over current alarm, interlock strategy, T° alarm settings, PID settings, T° sensor type, water flow and level alarm, thermoelectric power consumption … Laser control via USB connections…as a non exhaustive list.

A special feature has been added to the laser control board in order to allows the laser to operate in pulsed mode at 1kHz.

The stability achieve is +/-0,05°C on 8 running hours, thanks to our thermoelectric assembly design, giving a secured wavelength stability for the application.

 

Our value

Thanks to our unique mixed competencies in photonics and thermal management, we have handle a part of the practical experience development and by the way allow our customer to focus their work on a more sensitive issue. 

Customer

   

IRSAMC (The Institute of Research on Complex Atomic and Molecular Systems. Learn more) is a federation of four laboratories in physics and fundamental chemistry whose research activities are supported both by the University Paul Sabatier, by the CNRS and the INSA. Visit www.irsamc.ups-tlse.fr for more information.

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