Microcollimated laser diode with low wavefront aberration |
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| Authors: | Ogata S. Sekii H. Maeda T. Goto H. Yamashita T. Imanaka K. |
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| Affiliation: | Omron Corp., Kyoto; |
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| Abstract: | A microcollimated laser diode (MCLD) utilizing a 1-mm short focal length, φ0.5-mm small diameter micro Fresnel lens (MFL) as the collimating lens is discussed. The MCLD is assembled with a 780-nm quantum-well laser diode dice and an MFL in the smallest commercially available laser package. The radiated laser beam from the MCLD has a power of higher than 2 mW at 50 mA driving current, a φ2 mm beam diameter with a nearly Gaussian intensity profile, and a low wavefront aberration of less than λ/14 (RMS value) measured at a 1-m distance |
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