Multi-wavelength visible laser source
Methods and system to provide high power and brightness display and illumination systems and methods. In embodiments multi-wavelength laser beams in the wavelength range of 300 nm to 700 nm, including high power beams in these wavelengths having excellent beam qualities are provided and used. The three wavelengths can be primary colors, red, green and blue. Manufacturing and display systems, allowing the high-power white light generation directly from a single fiber laser source, such as theaters, sporting events, public events, private and home entertainment to name a few. The systems are configured for Photopic and Scotopic vision.
1. A multi-wavelength visible laser comprising:
(a) a plurality of pump sources, each comprising a plurality of high power blue laser diodes;
(b) a plurality of nested Raman oscillators, configured to create multiple wavelength outputs;
(c) wherein one of the plurality of pump sources is optically associated with one of the plurality of the nested Raman oscillators and thereby pumps the associated nested Raman oscillator; and,
(d) a fiber laser comprising a plurality of Fiber Bragg Gratings that provide a mode filter element in the fiber laser;
(e) wherein the fiber laser is in optical communication with the outputs from the nested Raman oscillators.
2. The laser of claim 1 , where the high-power blue laser diodes are launched into a clad of each of the Raman oscillators.
3. The laser of claim 1 , where each of the high-power blue laser diodes are spectrally beam combined and launched into a clad of each of the Raman oscillator.
4. The laser of claim 1 , further comprising a high numerical aperture clad surrounding a step index single mode core; and, having a core to clad ratio ranging from 1:2 to 1:10.
5. The laser of claim 1 , further comprising has a high numerical aperture clad surrounding a graded index core; and, having a core to clad ratio ranging from 1:2 to 1:10.
6. The laser of claim 4 , wherein at least one of the Fiber Bragg Gratings is written directly in the step index core.
7. The laser of claim 5 , wherein at least one of the Fiber Bragg Gratings is written directly in the graded index core.
8. The laser of claim 1 has external optics that form a resonator.
9. The laser of claim 1 , wherein the Fiber Bragg gratings are configures as a sequence of Fiber Bragg Gratings that define a single shifted output wavelength.
10. The laser of claim 1 , wherein the Fiber Bragg gratings are configures as a sequence of Fiber Bragg Gratings that defines multiple cavities which results in multiple output wavelengths.
11. The laser of claim 1 , further comprising a high numerical aperture clad surrounding a step index multimode core.
12. The laser in claim 1 has a high numerical aperture clad surrounding a graded index multimode core.
13. The laser of claim 1 , wherein the laser is configured to provide multiple output wavelengths that create three ideal wavelengths for viewing a projection display in dim background illumination.
14. The lasers of claim 1 , wherein the laser is configured to provide multiple output wavelengths that create three ideal wavelengths for viewing a projection display in a bright background illumination.
15. A display system having one or more of the lasers of claim 1 .
16. An illumination system having one or more of the lasers of claim 1 .
17. The illumination system of claim 16 , wherein the illumination system is located at a drive-in movie theater.
18. The illumination system of claim 16 , wherein the illumination system is located at a sporting event.
19. The illumination system of claim 18 , comprising a display, having a picture size of at least 50 feet by 50 feet.
20. The illumination system of claim 16 , wherein the illumination system is located at an amusement park.
21. The illumination system of claim 16 , wherein the illumination system is located at a body of water.
22. The illumination system of claim 21 , wherein the body of water is located at a water park.
23. The illumination system of claim 16 , wherein the illumination system is located at a location selected from the group consisting of a theater, an amphitheater, a harbor, an airport, a rail yard, a concert venue, a harbor, and a road way.
24. A method wherein the illumination system of claim 16 , illuminations an object.
25. The method of claim 24 , wherein the object is selected from the group consisting of a drive-in movie screen, a building, a bridge, a screen, a cloud or vapor, a structure, a vehicle, a surface, or an opaque surface.
26. The system of claim 1 , wherein one, two, or three of the wavelengths of the three primary color laser beams are selected based upon peak sensitivity for Photopic visual sensitivity.
27. The system of claim 1 , wherein one, two, or three of the wavelengths of the three primary color laser beams are selected based upon peak sensitivity for Scotopic visual sensitivity.
28. The system of claims 1 , wherein the system is adjustable to provide one, two, or three of the wavelengths of the three primary color laser beams selected based upon peak sensitivity for Scotopic or Photopic visual sensitivity.