Multiple Laser Projection System

1 . An image projection method comprising:

generating a first green laser light from a green laser diode;

generating a second green laser light from a first diode-pumped solid-state laser;

focusing the second green laser light into an optical fiber;

generating a stimulated Raman scattering light;

using the stimulated Raman scattering light to enhance an aspect of a light output of the optical fiber; and

combining the first green laser light and the stimulated Raman scattering light, to form a projected digital image.

2 . The method of claim 1 wherein the aspect of the light output of the optical fiber is a color of the output of the optical fiber.

3 . The method of claim 1 wherein the aspect of the light output of the optical fiber is a speckle characteristic of the output of the optical fiber.

4 . The method of claim 1 wherein the second green laser light has a wavelength of 532.5 nm.

5 . The method of claim 1 wherein the second green laser light has a wavelength of 523.5 nm.

6 . The method of claim 5 further comprising:

generating a third green laser light from a second diode-pumped solid-state laser that comprises a potassium gadolinium tungstate Raman crystal; and

combining the third green laser light, the first green laser light, and the stimulated Raman scattering light, to form a projected digital image.

7 . The method of claim 6 wherein the second diode-pumped solid-state laser has a single light output at a wavelength of 545.4 nm.

8 . The method of claim 7 further comprising:

separating the light output of the optical fiber into a first spectrum light and a second spectrum light;

wherein the projected digital image is a stereoscopic image; a first image of the stereoscopic image is formed from the first green laser light and the first spectrum light; and a second image of the stereoscopic image is formed from the third green laser light and the second spectrum light.

9 . An optical apparatus comprising:

a green laser diode that generates a first green laser light;

a first diode-pumped solid state laser that generates a second green laser light; and

an optical fiber;

wherein the second green laser light is focused into the optical fiber; the optical fiber generates a stimulated Raman scattering light that enhances an aspect of a light output of the optical fiber; and the first green laser light and the stimulated Raman scattering light are combined to form a projected digital image.

10 . The apparatus of claim 9 wherein the aspect of the light output of the optical fiber is a color of the output of the optical fiber.

11 . The apparatus of claim 9 wherein the aspect of the light output of the optical fiber is a speckle characteristic of the output of the optical fiber.

12 . The apparatus of claim 9 wherein the second green laser light has a wavelength of 532 nm.

13 . The apparatus of claim 9 wherein the second green laser light has a wavelength of 523.5 nm.

14 . The apparatus of claim 13 further comprising:

a second diode-pumped solid-state laser that comprises a potassium gadolinium tungstate Raman crystal; and

the second diode-pumped solid-state laser generates a third green laser light; and

the third green laser light, the first green laser light, and the stimulated Raman scattering light, are combined to form the projected digital image.

15 . The apparatus of claim 14 wherein the second diode-pumped solid-state laser has a single light output at a wavelength of 545 nm.

16 . The apparatus of claim 13 further comprising:

a beamsplitter that separates the light output of the optical fiber into a first spectrum light and a second spectrum light.

17 . The apparatus of claim 16 wherein the projected digital image is a stereoscopic image; and a first image of the stereoscopic image is formed from the first green laser light and the first spectrum light; and a second image of the stereoscopic image is formed from the third green laser light and the second spectrum light.