Laserloetmodul, Charakterisierung der Diodenlaser Zusammenfassung

Available from TIB Hannover: DtF QN1(81,45) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman

Neue Materialien und Verfahren fuer 3D-MID. Teilprojekt E: Laserunterstuetztes Reflowloeten Abschlussbericht

Available from TIB Hannover: DtF QN1(81,46) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman

DPSS Laser Beam Quality Optimization Through Pump Current Tuning

The goal of this study is to demonstrate how a DPSS laser beam's quality parameters can be simultaneously optimized through pump current tuning. Two DPSS lasers of the same make and model were used where the laser diode pump current was first varied to ascertain the lowest RMS noise region. The lowest noise was found to be 0.13% in this region and the best M{sup 2} value of 1.0 and highest laser output power were simultaneously attained at the same current point. The laser manufacturer reported a M{sup 2} value of 1.3 and RMS noise value of .14% for these lasers. This study therefore demonstrates that pump current tuning a DPSS laser can simultaneously optimize RMS Noise, Power and M{sup 2} values. Future studies will strive to broaden the scope of the beam quality parameters impacted by current tuning

The Menzel Symposium on Solar Physics, Atomic Spectra and Gaseous Nebulae in honor of the contributions made by Donald H. Menzel : proceedings of a Symposium held at the Harvard College Observatory, Cambridge, Massachusetts, April 8-9, 1971 /

Includes bibliographical references.Mode of access: Internet

Spatial dynamics of picosecond CO sub 2 laser pulses produced by optical switching in Ge

The design, test and optimization of a picosecond CO{sub 2} pulse-forming system are presented. The system switches a semiconductor's optical characteristics at 10 {mu}m under the control of a synchronized 1.06-{mu}m Nd:YAG picosecond laser pulse. An energy-efficient version of such a system using collimated beams is described. A simple, semi-empirical approach is used to simulate the switching process, specifically including the spatial distributions of the laser energy and phase, which are relevant for experiments in laser-driven electron acceleration. 11 refs., 7 figs