Laser illumination beam generation system employing despeckling of the laser beam using high-frequency modulation of the laser diode current and optical multiplexing of the component laser beams
A laser illumination beam generation system including a laser diode (LD) for producing a laser beam in response to a diode current supplied thereto, wherein the laser beam has a central characteristic wavelength. Diode current drive circuitry generates the diode current and supplies the same to the VLD. A high frequency modulation (HFM) circuitry modulates the diode current supplied to the laser diode, so as to produce a spectral side-band components about the central characteristic wavelength, and thereby reduces the coherence of the laser illumination beam as well as its coherence length. An optical multiplexing (OMUX) device receives the laser beam as an input beam and generates multiple laser beams therefrom and recombines the multiple laser beams so as to produce a composite output laser illumination beam having reduce coherence.
Metrologic Instruments, Inc.
G A G G G G G G G G G G G G G G G G G G G G G
G07G A47F G06K G07G G02B G06K G06K G07G G06K G06K G06K G06V G06Q G06K G06Q G06K G06K G06K G06K G06K G06K G06K G07G
inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional inventional additional inventional inventional inventional inventional inventional inventional inventional
Mark Xiaoxun Xi Timothy Michael Mark John Steven C. Harry Jie Tao Anatoly Sean Nicholas Yong Duane John A. Ming Patrick JiBin
Schmidt Zhu Tao Good Veksland Hernandez Gardner Essinger Knowles Ren Xian Kotlarsky Kearney Ciarlante Liu Ellis Furlong Zhuo Giordano Liu