Nonlinear solid state devices for optical radiation in far-uv spectrum

A light source, comprising:

• a monolithic structure comprising a light emitting element that is configured to generate light of a first frequency, and a nonlinear optical element that is configured to receive the light of the first frequency from the light emitting element and generate light of a second frequency from the light of the first frequency.

-41. (canceled)

An ultraviolet (UV) light source, comprising:

• a light emitting element that is configured to generate light of a first frequency;
• and
• a nonlinear optical element comprising aluminum nitride (AlN) that is configured to receive the light of the first frequency from the light emitting element and generate UVC light of a second frequency from the light of the first frequency.

-51. (canceled)

-61. (canceled)

A light source, comprising:

• a light emitting element that is configured to generate light of a first frequency;
• and
• a nonlinear optical output coupling element that is configured to receive the light of the first frequency from the light emitting element, generate light of a second frequency from the light of the first frequency, and outcouple the light of the second frequency as output light at a plurality of positions or continuously along a length thereof.

-70. (canceled)