Periodically complex resonant structures

1 . A method comprising:

for each desired wavelength of a plurality of desired output wavelengths, selecting a light-emitting resonant structure (LERS) that emits light at the desired wavelength when exposed to a beam of charged particles; and

forming a periodically complex resonant structure from the selected light-emitting resonant structures.

2 . A method as in claim 1 further comprising:

determining at least some dimensions of each said light-emitting resonant structure based, at least in part, on one or more of the following:

a voltage of said beam of charged particles;

an expected angle of observation;

a period length of the LERS; and

a velocity of the beam of charged particles.

3 . A method as in claim 1 wherein there are n desired wavelengths, denoted λ i for integer values of i from 1 to n, and wherein there are n corresponding light-emitting resonant structures, denoted LERS i for integer values of i from 1 to n, and wherein each said LERS i , emits light at the wavelength λ i , as given by the equation:

λ

i

=

l

i



n

i





[

1

β

-

sin





θ

i

]

where:

n i =mode number for i-th LERS

θ i is angle of observation for the i-th LERS;

l i is the period length for the i-th LERS.

P i is the number of periods for the i-th LERS.

4 . A method comprising:

selecting a type of light made up of light of a plurality of wavelengths;

selecting a subset of said plurality of wavelengths;

for each desired wavelength of said subset of wavelengths, selecting a light-emitting resonant structure (LERS) that emits light at the desired wavelength when exposed to a beam of charged particles; and

forming a periodically complex resonant structure from the selected light-emitting resonant structures.

5 . A device comprising:

a plurality of light-emitting resonant structures (LERSs), each said LERS emitting light when exposed to a common beam of charged particles, each said LERS emitting light at a wavelength distinct from at least one other said LERS.