Efficient Laser Dazzling Device with GaN Diode Technology
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Summary
Problems
Conventional laser dazzling devices are complex, expensive, and difficult to scale due to their multi-stage diode pumped solid state (DPSS) frequency doubling design, which requires complex optics and is sensitive to temperature changes, alignment, and produces hazardous residual infrared beams.
Innovation solutions
A laser dazzling device using a single-stage gallium nitride (GaN) diode laser that directly emits green light, coupled with a phosphor to convert the laser beam into a bright, collimated green, blue, or white light, eliminating the need for frequency doubling and reducing complexity, cost, and hazardous infrared emissions.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If a conventional DPSS frequency doubled green laser is used, then green laser light can be generated, but the device becomes complex and expensive with difficult scaling
Why choose this principle:
The patent extracts and eliminates the complex frequency doubling stage from the conventional DPSS laser system. By using a diode laser that directly emits green light at 532 nm, the invention removes the need for 808 nm pump lasers, 1064 nm solid state crystals, and frequency doubling optics, thereby simplifying the overall device architecture while maintaining green light output.
Principle concept:
If a conventional DPSS frequency doubled green laser is used, then green laser light can be generated, but the device becomes complex and expensive with difficult scaling
Why choose this principle:
The invention merges the pump source and lasing medium into a single integrated diode laser component. Instead of separate 808 nm pump diodes, 1064 nm solid state gain medium, and frequency doubling crystal, the system uses a single 532 nm green diode laser that combines all functions into one device, reducing optical alignment requirements and system complexity.
Application Domain
Data Source
AI summary:
A laser dazzling device using a single-stage gallium nitride (GaN) diode laser that directly emits green light, coupled with a phosphor to convert the laser beam into a bright, collimated green, blue, or white light, eliminating the need for frequency doubling and reducing complexity, cost, and hazardous infrared emissions.
Abstract
A laser illumination or dazzler device and method. More specifically, examples of the present invention provide laser illumination or dazzling devices power by one or more violet, blue, or green laser diodes characterized by a wavelength from about 390 nm to about 550 nm. In some examples the laser illumination or dazzling devices include a laser pumped phosphor wherein a laser beam with a first wavelength excites a phosphor member to emit electromagnetic at a second wavelength. In various examples, laser illumination or dazzling devices according to the present invention include polar, non-polar, or semi-polar laser diodes. In a specific example, a single laser illumination or dazzling device includes a plurality of violet, blue, or green laser diodes. There are other examples as well.