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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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Anamorphic beam concentrator for linear laser-diode bar.

Fan Zhang, Chun-Can Wang, Rui Geng

|June 25, 2009

Summary

This summary is machine-generated.

A novel anamorphic beam concentrator using a tapered silicon dioxide rod improves laser diode (LD) output. This device compensates for input beam fluctuations, producing a more symmetrical beam spot.

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Area of Science:

Optics and Photonics
Laser Technology

Background:

Linear laser diode (LD) bars are crucial light sources but often suffer from beam quality issues.
Efficient beam shaping and concentration are essential for various laser applications.

Purpose of the Study:

To present and investigate an anamorphic beam concentrator for linear LD bars.
To demonstrate the device's capability in improving beam symmetry and compensating for input fluctuations.

Main Methods:

Numerical investigation using ZEMAX optical design software.
Experimental validation using a tapered SiO(2)-rod with a skewed and curved surface.

Main Results:

A relatively symmetrical output beam spot was achieved at the concentrator's output facet.
Intensity and spatial fluctuations of the input beam were effectively compensated 20cm from the output.

Conclusions:

The presented anamorphic beam concentrator is effective for linear LD bars.
The device offers a viable solution for improving laser beam quality and stability.