HF drivers for controlling acousto-optical modulators (Q switch). They are used, e.g. in laser technology for modulating the laser intensity, but also in telecommunication and spectroscopy.

An acousto-optical modulator (AOM) is an optical component with which light rays can be bent to varying degrees.

To do this, an optical lattice is created in a transparent solid and the sound waves required for this are mostly generated electrically through piezo effect.

An acousto-optical modulator consists of a transparent solid (glass or crystal), to one end of which a piezo element is fixed to generate sound waves.

When the sound waves travel through the crystal, they cause periodic expansion and compression and thus, a periodic change in the refractive index.

The objectives of the new QSD driver series from the beginning of construction were:

High reliability, temperature stability and compact dimensions.

The new QSD series offers you a HF driver of the latest generation. The compact design, features and interface selection set new standards.

The combination of digital and analog signal processing helped to achieve a synthesis of speed and functional variability.

Individual components and module parts were tested extensively during the development phase itself.

Hence the user receives a well-engineered product.

Functional examples

Amplituden Modulation AM

Here, the power output is changed (modulated) and hence, the available power of the transmitter is determined directly.

Delta is supplied externally

Yellow --> HF Voltage

Blue --> Modulation

The HF can be lowered to a pre-determined amplitude through an external pulse. It is determined through an externally supplied analog setting and can also be lowered to zero.

In inactive state, it lies under 5.1. preset maximum HF power.

In active state, a power corresponding to the analog value is given.

<--   Analog value   --> <--   Pulse    --> <--   HF output   -->

The analog input signal level is scalable.