Beam-correcting holographic doublet for focusing multimode laser diodes

Beam-correcting holographic doublet for focusing multimode laser diodes

We design and fabricate a beam-correcting, holographic focusing doublet for laser diodes in the presence of a recording-to-readout wavelength shift. This two-hologram assembly compensates for the strong chromatic variation of the spot size and its lateral position, which are typical of a single diff...

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Veröffentlicht in:Optics letters 1993-02, Vol.18 (3), p.179-181
Hauptverfasser: AHARONI, A, GOODMAN, J. W, AMITAI, Y
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container_title Optics letters
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creator AHARONI, A
GOODMAN, J. W
AMITAI, Y
description We design and fabricate a beam-correcting, holographic focusing doublet for laser diodes in the presence of a recording-to-readout wavelength shift. This two-hologram assembly compensates for the strong chromatic variation of the spot size and its lateral position, which are typical of a single diffractive element. The doublet, recorded at 488 nm, successfully corrects the astigmatism of a multimode laser diode beam at 820 nm and focuses it to a near-diffraction-limited 1/e-squared spot width with a significantly extended depth of field. (Author)
doi_str_mv 10.1364/ol.18.000179
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title Beam-correcting holographic doublet for focusing multimode laser diodes
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