Stabilization of Miniaturized Intracavity Frequency-Doubled Lasers

Kurzbeschreibung zum Projekt, EN The so-called 'green problem' became relevant with the need to miniaturize cw intracavity frequency doubled solid state lasers. One can see the green problem as high frequency (MHz-range), high contrast ((ΔI / I> 0,6) intensity modulation.

There are mainly two standard solutions: a) using a long resonator – which means, that you must not miniaturize the laser – results in using as many longitudinal modes as mode hopping does not cause significant intensity noise. b) forcing a single mode operation, which is accompanied by significant loss of intensity. The Georg-August-Universität of Göttingen proposes a method based on a multiple time delayed feedback control. A signal generated from intensities of the fundamental modes is fed back to the pump power. The result is a highly stable output (peak-to-peak better 1%) with nearly no loss of intensity. Such stable cw-lasers with high beam quality are used in measurement and medicin, but in RGB projection systems and holografic displays. Now these systems can be miniaturized.

Further Information: PDF

MBM ScienceBridge GmbH
Phone: (0551) 30724-151

Contact
Dr. Jens-Peter Horst

Media Contact

info@technologieallianz.de TechnologieAllianz e.V.

All latest news from the category: Technology Offerings

Back to home

Comments (0)

Write a comment

Newest articles

The Sound of the Perfect Coating

Fraunhofer IWS Transfers Laser-based Sound Analysis of Surfaces into Industrial Practice with “LAwave”. Sound waves can reveal surface properties. Parameters such as surface or coating quality of components can be…

Customized silicon chips

…from Saxony for material characterization of printed electronics. How efficient are new materials? Does changing the properties lead to better conductivity? The Fraunhofer Institute for Photonic Microsystems IPMS develops and…

Acetylation: a Time-Keeper of glucocorticoid Sensitivity

Understanding the regulatory mechanism paves the way to enhance the effectiveness of anti-inflammatory therapies and to develop strategies to counteract the negative effects of stress- and age-related cortisol excess. The…

Partners & Sponsors