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Berlin 2001 – wissenschaftliches Programm

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Q: Quantenoptik

Q 19: Laser I

Q 19.3: Vortrag

Mittwoch, 4. April 2001, 16:15–16:30, H 1012

Adjustable external resonator for broad area diode lasers — •Danilo Skoczowsky, Volker Raab, and Ralf Menzel — Universität Potsdam, Am Neuen Palais 10, 14469 Potsdam

We operate broad area diode lasers in different kinds of external

resonators. On this behalf the outcoupling facet posesses an AR

coating to prevent the semiconductor chip from lasing on its own.

We then investigate the angular dependence of the stability and efficiency

of the resulting laser mode.

Our setup consists of two crossed cylindrical resonators separately

for the slow- and the fast-axis of the laser. Along the slow axis we

can obtain either a single-beam emission or an emission of two beams

with excellent parallelicity and adjustable separation. Calculations and

experiments almost perfectly coincide.

With these kinds of setup excellent beam qualities of M2<2 can be obtained

even from broad area diode lasers.

(Funded by the BMBF and VDI)

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