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Optical Engineering

Enhancement of emitting power density with a beam-shaping technique for a high-power laser-diode array stack
Author(s): Hiroyuki Ohashi; Xin Gao; Hiroshi Okamoto; Masaomi Takasaka; Masayuki Saito; Kazunori Shinoda
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Paper Abstract

We present a beam-shaping technique to enhance emitting power density for a high-power laser-diode array stack. By use of a stripe mirror and a high-reflection mirror, the laser source height of 42 mm is folded to 21 mm and the emitting power density is increased to 365 W/cm2 from a raw emitting power density of 194 W/cm2. Moreover, the beam parameter product (BPP) that is used to evaluate the beam quality is effectively improved to 168-mm mrad from a raw BPP of 336-mm mrad in the fast axis for the collimated high-power laser-diode array stack.

Paper Details

Date Published: 1 October 2004
PDF: 2 pages
Opt. Eng. 43(10) doi: 10.1117/1.1789151
Published in: Optical Engineering Volume 43, Issue 10
Show Author Affiliations
Hiroyuki Ohashi, Hamamatsu Photonics K.K. (Japan)
Xin Gao, Hamamatsu Photonics K.K. (Japan)
Hiroshi Okamoto, Hamamatsu Photonics K.K. (Japan)
Masaomi Takasaka, Hamamatsu Photonics K.K. (Japan)
Masayuki Saito, Hamamatsu Photonics K.K. (Japan)
Kazunori Shinoda, Hamamatsu Photonics K.K. (Japan)

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