Microcollimated laser diode with low wavefront aberration

Journal Article · Wed Nov 01 00:00:00 EST 1989 · IEEE Photonics Technology Letters; (USA)

DOI:https://doi.org/10.1109/68.43379· OSTI ID:5295151

Ogata, S; Sekii, H; Maeda, T; Goto, H; Yamashita, T; Imanaka, K ^[1]

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1. Central R and D Lab., OMRON Corp., Nagaokakyo-city, Kyoto 617 (JP)

The authors developed microcollimated laser diode( MCLD) utilizing a 1 mm short focal length, phi, lc 0.5 mm small diameter micro Fresnel lens (MFL) for the first time as the collimating lens. The MCLD is assembled with a 780 nm quantum-well laser diode dice and an MFL in the smallest commercial available laser package. The radiated laser beam form the MCLD has higher than 2mW power at 50 mA driving current, narrow enough as a phi 2 mm beam diameter with nearly Gaussian intensity profile, and low wavefront aberration less than {lambda}14 (rms value) measured at 1 m distance.

• OSTI ID: 5295151
• Journal Information: IEEE Photonics Technology Letters; (USA), Vol. 1:11; ISSN 1041-1135
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
FRESNEL LENS
DESIGN
SEMICONDUCTOR DIODES
SEMICONDUCTOR LASERS
BEAM OPTICS
QUANTUM EFFICIENCY
EFFICIENCY
LASERS
LENSES
SEMICONDUCTOR DEVICES
SOLID STATE LASERS
426002* - Engineering- Lasers & Masers- (1990-)