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Proceedings Article

RGB lasers for laser projection displays

[+] Author Affiliations
Guenter Hollemann, Bernhard Braun, Peter Heist, Ulf Krause, Uwe Kutschki

JENOPTIK Laser, Optik, Systeme GmbH (Germany)

Friedhelm Dorsch, Petra Hennig, Hermann A. Voelckel

JENOPTIK Laserdiode GmbH (Germany)

Proc. SPIE 3954, Projection Displays 2000: Sixth in a Series, 140 (April 25, 2000); doi:10.1117/12.383365
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From Conference Volume 3954

  • Projection Displays 2000: Sixth in a Series
  • Ming H. Wu
  • San Jose, CA | January 22, 2000


JENOPTIK Laser, Optik, Systeme GmbH has developed for the first industrial all-solid-state Red-Green-Blue laser system for large image projection systems. Compact in design (0.75 m3, 180 kg, 3 kW power consumption), the system consists of a modelocked oscillator amplifier subsystem with 7 ps pulse duration and 85 MHz pulse repetition frequency, an optical parametric oscillator, and several non-linear stages to generate radiation at 628 nm, 532 nm and 446 nm with an average output power above 18 W. Each of the three colors is modulated with the video signal in a contrast ratio of 1000:1 and coupled into a common low order multi mode fiber. The system architecture relies on efficiently manufacturable components. With the help of FEM analysis, new engineering design principles and subsequent climatic and mechanical tests, a length stability below 50 micrometers and an angle stability below 10 (mu) rad have been achieved. The design includes efficient laser diodes with integrated thermo- electric cooler and a lifetime above 10000 hours. The stability of the output power is better than +/- 2% in a temperature range from 5 degree(s)C to 40 degree(s)C. The system operates reliably for more than 10000 hours under field conditions. The design is based (among others) on work by Laser-Display-Technologie KG and the University of Kaiserslautern.

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Guenter Hollemann ; Bernhard Braun ; Friedhelm Dorsch ; Petra Hennig ; Peter Heist, et al.
"RGB lasers for laser projection displays", Proc. SPIE 3954, Projection Displays 2000: Sixth in a Series, 140 (April 25, 2000); doi:10.1117/12.383365; http://dx.doi.org/10.1117/12.383365

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