Wide-field deep UV Raman microscope
A spectroscopy device includes an incoherent light source, tunable to a predetermined emission wavelength; a microscope platform comprising a microscope objective comprising a deep-UV optimized objective and a focal plane defined thereon; a notch filter having an absorption frequency matched to the emission wavelength; and a frequency-selective optical path from the wide-field UV light source to the microscope platform onto the focal plane and from the focal plane through the notch filter.
1. A device, comprising:
an incoherent light source;
a line filter tuned to an emission wavelength at a single emission line of about 1 cm −1 ;
a microscope platform comprising a microscope objective comprising a deep-UV optimized objective and a focal plane defined thereon;
a notch filter having an absorption frequency matched to the emission wavelength; and
a frequency-selective optical path from the incoherent light source to the microscope platform onto the focal plane and from the focal plane through the notch filter.
2. The device of claim 1 , wherein the incoherent light source comprises Mercury.
3. The device of claim 2 , wherein the notch filter is a cell comprising Mercury.
4. The device of claim 1 , further comprising at least one lens for collimating a light emitted from the light source.
5. The device of claim 1 , wherein the wide-field light source emits light in at an ultraviolet (UV) frequency.
6. The device of claim 1 , further comprising a beam-splitter in the optical path, the beam-splitter configured to Raman signal to the notch filter from the focal plane.
7. The device of claim 1 , further comprising an optical fiber between the optical plane and the notch filter.
8. The device of claim 1 , further comprising an imaging spectrometer having a high-numerical aperture objective in the optical path after the notch filter.
9. The device of claim 1 , wherein the material of the notch filter is matched to the material of the incoherent light source.
10. The device of claim 1 , wherein the incoherent light source comprises a low pressure atomic lamp comprising an emission material.
11. The device of claim 1 , wherein the incoherent light source comprises an emission material and the notch filter comprises the emission material.
12. The device of claim 1 , wherein the incoherent light source comprises Tellurium.
13. The device of claim 11 , wherein the notch filter is a cell comprising Tellurium.
14. The device of claim 2 , wherein the emission frequency is one of 184.45 nm, 253.7 nm, 365.4 nm, 404.7 nm, 435.8 nm, 546.1 nm, 578.2 nm, and 650 nm.
15. The device of claim 1 , wherein the incoherent light source is a wide-field UV light source.