LIGHT SOURCE DEVICE AND WAVELENGTH CONVERSION METHOD

摘要

A light source emits first incident light to a first polarization-reversed structure. The first polarization-reversed structure then converts the wavelength of the first incident light to emit a higher harmonic wave. A fiber coupler divides the higher harmonic wave output from the first polarization-reversed structure into output light emitted from the light source device and feedback light. The feedback light enters a second polarization-reversed structure. The second polarization-reversed structure then converts the wavelength of the feedback light to emit second incident light. The second incident light has the same wavelength as the first incident light. The second incident light enters a first wavelength converter.

主权项

1. A light source device, comprising:
a light source that emits first incident light; a first wavelength converter that receives the first incident light and converts a wavelength of the first incident light to emit a higher harmonic wave; a dividing portion that divides the higher harmonic wave output from the first wavelength converter into output light emitted from the light source device and feedback light; and a second wavelength converter that receives the feedback light and converts a wavelength of the feedback light to emit second incident light that has [[the]] a same wavelength as the first incident light, wherein the second incident light enters the first wavelength converter without depending on the light source.