Method for selection of Raman excitation wavelengths in multi-source Raman probe

1. A diagnostic system comprising:

a spectrometer, said spectrometer comprising:

a known quantum efficiency; and

a Raman Probe device configured to:

provide Raman light wavelengths to said spectrometer, said Raman light wavelengths being generated in response to an excitation light illuminating a target object, wherein said excitation light comprises at least one of a first light comprising a first excitation wavelength, λ p 2 and a second light comprising a second excitation wavelength, λ p 1 , said first excitation wavelength selected based on at least one characteristic of said target object and said second excitation wavelength determined based on said first excitation wavelength and a wavelength associated with substantially a peak value of said known quantum efficiency, said Raman probe device comprising:

a first lens configured to:

focus said first light and said second light onto said target object; and

a filter configured to:

pass said Raman light wavelengths to said spectrometer; and

block said first excitation wavelengths and said second excitation wavelengths from passing to said spectrometer.

2. The system of claim 1 , wherein said second excitation wavelength is determined as:

λ p 1 =1/[ v poi +1/λ QE ]

wherein λ QE is said wavelength associated with substantially said peak of said known quantum efficiency within a range defined by the first excitation wavelength; and

v poi is the Raman shifted peak of interest for the target object.

3. The system of claim 1 , wherein said first lens is configured to:

collect said Raman light wavelengths and

provide said collected Raman light wavelengths to said filter.

4. The system of claim 1 , comprising:

a second lens, said second lens configured to:

collect said Raman light wavelengths, and

provide said Raman light wavelengths to said filter.

5. The system of claim 4 , comprising:

an optical device comprising: at least one transmissive optical fiber configured to:

receive said first light and said second light; and

direct said received first light and said second light to said target object; and

a plurality of optical fibers configured to:

receive said Raman light wavelengths; and

direct said received Raman light wavelengths to said second lens.

6. The system of claim 5 , comprising:

a mask, wherein said mask prevents selected ones of said plurality of receptive optical fibers from receiving said Raman light wavelengths.

7. The system of claim 5 , wherein:

said plurality of receptive optical fibers are arranged in one of: a 1-dimensional array of optical fibers and a 2-dimensional array of fiber optical fibers.

8. The system of claim 5 , wherein said optical device comprises:

a plurality of optical fibers arranged annularly about a center optical core, wherein said center optical core is one of: said at least one transmissive optical fiber and said plurality of receptive optical fibers.

9. The system of claim 1 , wherein said at least one characteristic of the target object is associated with a fluorescence generated by said target object when illuminated by said first light.

10. The system of claim 1 , wherein said first light and said second light are emitted concurrently.

11. The system of clam 1 , wherein said first light and said second light are emitted sequentially.

12. The system of claim 1 , comprising:

a first laser configured to:

generate said first light, wherein said first laser is one of: internal to said Raman probe device and external to said Raman probe device; and

a second laser configured to:

generate said second light, wherein said second laser is one of: internal to said Raman probe device and external to said Raman probe device.

13. A Raman Probe device comprising:

a first lens, said first lens configured to:

receive at least one of:

a first excitation wavelength λ p 2 , said first excitation wavelength determined based on at least one characteristic of a target object and

a second excitation wavelength λ p 1 ;

focus said at least one of said first excitation wavelength and said second excitation wavelength onto said target object, wherein a Raman wavelength is generated in response to said target object being illuminated by a corresponding one of at least one of:

said first excitation wavelength and said second excitation wavelength; and

a filter, said filter configured to:

pass said Raman wavelength generated in response to said target object being illuminated by a corresponding one of at least one of:

said first excitation wavelength and said second excitation wavelength, to a spectrometer,

wherein said spectrometer comprises:

a known quantum efficiency and said second excitation wavelength is determined as:

λ p 1 =1/[ v poi +1/λ QE ]

wherein λ QE is a wavelength associated with a peak of said quantum efficiency within a range defined by the first excitation wavelength; and

v poi is the Raman shifted peak of interest for the target object.

14. The Raman Probe device of claim 13 , wherein said first lens is configured to:

collect said Raman wavelength; and

present said collected Raman wavelength to said filter.

15. The Raman Probe device of claim 13 , comprises:

a second lens, said second lens configured to:

collect said Raman wavelength; and

present said collected Raman wavelength to said filter.

16. The Raman Probe device of claim 15 comprising:

an optic device comprising:

a plurality of optical fibers, wherein selected ones of said optical fibers receive said first excitation wavelength and said second excitation wavelength; and

selected ones of said optical fibers receive said Raman light wavelengths.

17. The Raman Probe device of claim 16 , wherein said plurality of optical fibers are arranged in one of: a matrix configuration and an annular configuration.

18. The Raman Probe device of claim 13 , comprising:

a first laser source configured to:

emit said first excitation wavelength; and

a second laser source configured to:

emit said second excitation wavelength, wherein at least one of said firstlaser source and said second laser source is: external to said Raman Probe and internal to said Raman Probe.

19. The Raman Probe device of claim 13 , wherein said first excitation wavelength and said second excitation wavelength are emitted one of: concurrently and sequentially.