Methods, arrangements and apparatus for utilizing a wavelength-swept laser using angular scanning and dispersion procedures

1. An apparatus for filtering an electromagnetic radiation, comprising:

at least one first arrangement configured to receive at least one first electro-magnetic radiation and forward at least one second electro-magnetic radiation at different angles with respect to a direction of incidence of the at least one first electro-magnetic radiation; and

at least one wavelength dispersion second arrangement configured to receive the at least one second electro-magnetic radiation, intentionally forward at least one third electro-magnetic radiation to the at least one first arrangement and further receive at least one fourth electro-magnetic radiation, wherein the at least one third electro-magnetic radiation is a return radiation from the at least one wavelength dispersion second arrangement based on the at least one second electro-magnetic radiation, and wherein the at least one fourth electro-magnetic radiation is a direct reflection of the at least one third electro-magnetic radiation from the at least one first arrangement.

2. The apparatus according to claim 1 , wherein the at least one first arrangement is a multi-faceted mirror arrangement.

3. The apparatus according to claim 2 , wherein the at least one first electro-magnetic radiation is intentionally caused to impact a first facet of the multi-faceted mirror arrangement, and the at least one third electro-magnetic radiation impacts a second facet of the multi-faceted mirror arrangement, the first and second facets being different from one another.

4. The apparatus according to claim 1 , wherein the at least one first arrangement is a polygon beam scanning arrangement.

5. The apparatus according to claim 4 , wherein the at least one first electro-magnetic radiation impacts a first facet of the polygon beam scanning arrangement, and the at least one third electro-magnetic radiation impacts a second facet of the polygon beam scanning arrangement, the first and second facets being different from one another.

6. The apparatus according to claim 5 , wherein the polygon beam scanning arrangement is capable of being continuously rotated.

7. The apparatus according to claim 1 , wherein the at least one second arrangement is at least one of a prism arrangement or a grism arrangement.

8. The apparatus according to claim 1 , wherein the first and second arrangements are positioned such that a further electro-magnetic radiation that is based on the first electro-magnetic radiation is received by the at least one first arrangement from the at least one second arrangement more that twice.

9. The apparatus according to claim 1 , further comprising:

at least one wavelength dispersion third arrangement configured to physically separate one or more components of a further electro-magnetic radiation based on a frequency of the further electro-magnetic radiation, wherein the at least one first electro-magnetic radiation is based on the further electro-magnetic radiation.

10. The apparatus according to claim 9 , further comprising:

at least one fourth arrangement which is configured to receive at least some of the one or more components, and modify at least one characteristic of the received one or more components to provide the at least one first electro-magnetic radiation which is associated with one or more further components of the further electro-magnetic radiation.

11. A source arrangement for providing at least one particular electromagnetic radiation, comprising:

at least one emitter arrangement configured to provide the at least one particular electromagnetic radiation;

at least one first arrangement configured to receive the at least one particular electro-magnetic radiation and forward at least one first electro-magnetic radiation at different angles with respect to a direction of incidence of the at least one particular electro-magnetic radiation; and

at least one wavelength dispersion second arrangement configured to receive the at least one first electro-magnetic radiation, forward at least one second electro-magnetic radiation to the at least one first arrangement and further receive at least one third electro-magnetic radiation, wherein the at least one second electro-magnetic radiation is a return radiation from the at least one wavelength dispersion second arrangement based on the at least one first electro-magnetic radiation, and wherein the at least one third electro-magnetic radiation is a direct reflection of the at least one second electro-magnetic radiation from the at least one first arrangement.

12. The source arrangement according to claim 11 , further comprising at least one laser cavity receiving the at least one third electromagnetic radiation.

13. The source arrangement according to claim 12 , wherein the laser cavity is a ring laser cavity.

14. The source arrangement according to claim 11 , wherein the at least one emitter arrangement is at least one of a semiconductor optical amplifier, a laser diode, a super-luminescent diode, a doped optical fiber, a doped laser crystal, a doped laser glass, or a laser dye.

15. The source arrangement according to claim 11 , wherein the at least one particular electromagnetic radiation has a frequency that is continuously swept in a positive wavelength direction.

16. The source arrangement according to claim 11 , further comprising an optical circulator.

17. The source arrangement according to claim 11 , wherein wavelength ranges of the at least one particular electromagnetic radiation provided by the at least one emitter arrangement are distinct from one another.

18. The source arrangement according to claim 11 , wherein the at least one first arrangement is a multi-faceted mirror arrangement.

19. The source arrangement according to claim 16 , wherein the at least one particular electro-magnetic radiation impacts a first facet of the multi-faceted mirror arrangement, and the at least one second electro-magnetic radiation impacts a second facet of the multi-faceted mirror arrangement, the first and second facets being different from one another.

20. The source arrangement according to claim 11 , wherein the at least one first arrangement is a polygon beam scanning arrangement.

21. The source arrangement according to claim 20 , wherein the at least one particular electro-magnetic radiation impacts a first facet of the polygon beam scanning arrangement, and the at least one second electro-magnetic radiation impacts a second facet of the polygon beam scanning arrangement, the first and second facets being different from one another.

22. The source arrangement according to claim 19 , wherein the polygon beam scanning arrangement is capable of being continuously rotated.

23. The source arrangement according to claim 11 , wherein the at least one second arrangement is at least one of a prism arrangement or a grism arrangement.

24. The source arrangement according to claim 11 , wherein the first and second arrangements are positioned such that a further electro-magnetic radiation that is based on the first electro-magnetic radiation is received by the at least one first arrangement from the at least one second arrangement more that twice.

25. The source arrangement according to claim 11 , further comprising:

at least one wavelength dispersion third arrangement configured to physically separate one or more components of a further electro-magnetic radiation based on a frequency of the particular electro-magnetic radiation, wherein the at least one particular electro-magnetic radiation is based on the further electro-magnetic radiation.

26. The source arrangement according to claim 25 , further comprising:

at least one fourth arrangement which is configured to receive at least some of the one or more components, and modify at least one characteristic of the received one or more components to provide at least one particular electro-magnetic radiation which is associated with one or more further components of the further electro-magnetic radiation.

27. A method for filtering an electromagnetic radiation, comprising:

receiving at least one first electro-magnetic radiation and forwarding at least one second electro-magnetic radiation at different angles with respect to a direction of incidence of the at least one first electro-magnetic radiation; and

receiving the at least one second electro-magnetic radiation, intentionally forwarding at least one third electro-magnetic radiation to the at least one first arrangement and further receiving at least one fourth electro-magnetic radiation,

wherein the at least one third electro-magnetic radiation is a return radiation from the at least one wavelength dispersion second arrangement based on the at least one second electro-magnetic radiation, and wherein the at least one fourth electro-magnetic radiation is a direct reflection of the at least one third electro-magnetic radiation from the at least one first arrangement.

28. A method for providing at least one particular electromagnetic radiation, comprising:

providing the at least one electromagnetic radiation using at least one emitter arrangement;

receiving the at least one particular electro-magnetic radiation and intentionally forwarding at least one first electro-magnetic radiation at different angles with respect to a direction of incidence of the at least one particular electro-magnetic radiation; and

receiving the at least one first electro-magnetic radiation, forwarding at least one second electro-magnetic radiation to the at least one first arrangement and further receiving at least one third electro-magnetic radiation using at least one second wavelength dispersion arrangement,

wherein the at least one second electro-magnetic radiation is a return radiation from the at least one wavelength dispersion second arrangement based on the at least one first electro-magnetic radiation, and wherein the at least one third electro-magnetic radiation is a direct reflection of the at least one second electro-magnetic radiation from the at least one first arrangement.