Aligna is a complete solution for beam pointing stabilization and/or beam guidance. The control electronics, a combined angle and position detector and two active mirrors form a feedback loop, which suppresses thermal drifts as well as fast fluctuations. This adjusts the beam alignment to submicron accuracy. In addition, the Aligna system offers various algorithms and functionalities such as:

• Scanning of the beam’s angle and position

• Optimization of the beam pointing

• Parallelization of the beam with respect to moving axes

• Self-learning parameter settings

• Modular system, control of up to 4 beams

• All common wavelengths

LaseLock is a universal and compact laser frequency stabilization electronics (“lock-box”), which can be used to frequency stabilize lasers (such as diode lasers, Ti:sapphire or dye lasers).

Stabilized lasers are sought-after components for many applications. By using LaseLock, laser drift can be almost completely eliminated and very narrow line widths can be generated with extreme stability. LaseLock measures and detects frequency changes of the laser and provides corresponding feedback signals so that these changes can be corrected and stabilized.

In particular, optical resonators or atomic absorption or fluorescence lines serve as frequency references. These reference components are also available from TEM Messtechnik:

• CoSy → offers reference standards based on saturation spectroscopy, with cesium, rubidium or potassium cells available

• iScan → is an active Fabry Perot interferometer, which can provide a stabilization signal at any frequency (“active frequency correction”)

Conversely, it is possible to control optical resonators to a given laser frequency using mechanical actuators. The drivers required for this are optionally available for LaseLock (HV-driver for piezo actuators, HC-driver for galvos or DLD-driver for diode lasers, incl. temperature and current control).

PhaseLock is a system to control the pulse timing of pulsed lasers. It controls the repetition rate of pulsed lasers and adjusts this rate in a way that the pulses are generated with at fixed times relative to a reference clock.

• Compact, stand-alone locking electronics for pulsed lasers

• pulse timing stabilization

• 2 independent PID regulators

• High-voltage output for piezo actuators

• Lock point validity detection and automatic “search” function

• Multi-channel monitor for display of regulator signals