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Characteristics of Multi-Beam Module Using Waveguides for Laser Scanning Optical Systems |
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| Authors: | Akiyoshi Hamada Naoki Nishida Takuji Hatano Masayuki Mino |
| Institution: | (1) Graduate School of Engineering, Tokushima Bunri University, 1314-1 Shido, Sanuki, Kagawa 769-2193, Japan;(2) Optical Engineering Center, Konica Minolta Opto, Inc., 4-18 Takadai, Itami, Hyogo 664-8511, Japan;(3) Device Technology R&D Laboratory, Konica Minolta Tech. Center, Inc., 1-2 Sakura-machi, Takatsuki, Osaka 569-8503, Japan |
| Abstract: | A multi-beam module using optical waveguides has been studied for a laser scanning optical system. Laser diodes with a wavelength of 780 nm are assembled on a silicon substrate. The beams emitted from the laser diodes are directly coupled into waveguides. This multi-beam module is assembled on a metal substrate with a photodiode. The photodiode controls the power of each laser diode on the silicon substrate. The multi-beam module is able to increase the output speed of high-density image printings, and the speed for high-speed color printings. We have developed the four-beam module with beam divergence angles of 11 degrees and spatial beam interval of 24 μm. Additional heat sink and optimizing tip-bonding between the laser diode and solder pad on the silicon substrate is useful to stabilize laser power against rising temperature. |
| Keywords: | laser printer multiple beams scanning optics waveguides electrical/optical characteristics |
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