Microcollimated laser diode with low wavefront aberration

descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1989Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Photonics Technology Letters, volume 1, pages 354-355 (issn: 1041-1135, eissn: 1941-0174,

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Authors: S. Ogata; H. Sekii; T. Maeda; H. Goto; T. Yamashita; K. Imanaka;

doi: 10.1109/68.43379

Microcollimated laser diode with low wavefront aberration

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Abstract

A microcollimated laser diode (MCLD) utilizing a 1-mm short focal length, phi 0.5-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 phi 2 mm beam diameter with a nearly Gaussian intensity profile, and a low wavefront aberration of less than lambda /14 (RMS value) measured at a 1-m distance. >

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