AOS Laser Driver Board




	The laser driver board can be used in conjunction with the phase controller and PSD boards in order to provide a fully functional derivative spectroscopy measurement system. A low-noise, high-quality laser driver module working in a constant current configuration is used to provide a highly stable laser diode drive current. Capable of providing 2A this module also comes with current limit control, soft-start drive circuitry and input modulation protection. The current through the laser diode is controlled by a single 0 to 2volt signal which can be derived from an external source or more usually from the phase controller board (analogue output). This ensures that the measurement system is fully synchronised and that maximum signal detection sensitivity can be achieved. A d.c or ramp voltage can also be added to the modulation-input signal. This signal input when used in conjunction with a reference signal arrangement can provide feed back control of the measurement system and keep the laser at the wavelength of choice. In addition to the laser driver circuitry the board also contains a very low noise dual rail power supply which, when used in a full stack arrangement, is used to power the PSD board and provide a suitable low noise power source for a front end photodiode amplifier. Photodiode amplifiers and high precision Peltier control modules are also available from AOS. Please visit our FAQ section here for more information

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AOS Technology Ltd, 46 Pate Road, Melton Mowbray, Leicestershire, LE13 0RG, England. T:+44 (0)1664 567711 F:+44 (0)1664 567712