Multiple-wavelength reflective Raman probe and Raman spectra detection device

A Raman spectra detection device, comprising:

• a laser source to provide a laser light beam, wherein the laser light beam can be configured to have different wavelengths;
• a multiple-wavelength reflective Raman probe, comprising:
• a first parabolic mirror having a first mirror surface, wherein the first mirror surface is arranged to focus at a first focal length, the first parabolic mirror receives the laser light beam, the laser light beam is reflected into a collimated light beam by the first mirror surface;
• a second parabolic mirror having a second mirror surface, wherein the second mirror surface is arranged to focus at a second focal length, the second mirror surface faces toward the first mirror surface to receive the collimated light beam, the second mirror surface condenses the collimated light beam and reflects out a convergent light beam, the convergent light beam is focused at a focal point of the second focal length;
• a third parabolic mirror having a third mirror surface, wherein the third mirror surface is arranged to focus at a third focal length, the third mirror surface faces away from the second mirror surface, the third parabolic mirror has a through hole, the convergent light beam passes through the through hole, the second focal length exceeds the third mirror surface and is focused on a sample detecting position, the third parabolic mirror is located between the sample detecting position and the second parabolic mirror, and the third mirror surface collects a Raman scattering light reflected by the sample detecting position and reflects as a collimated detection light beam;
• and
• a fourth parabolic mirror having a fourth mirror surface, wherein the fourth mirror surface is arranged to focus at a fourth focal length, the fourth mirror surface collects the detection light beam and condenses to an output light beam, the output light beam is focused at a focal point of the fourth focal length;
• and
• a spectrometer receiving the output light beam.

A Raman spectra detection device, comprising:

• a multiple-wavelength reflective Raman probe, comprising:
• a first parabolic mirror having a first mirror surface, wherein the first mirror surface is arranged to focus at a first focal length, the first parabolic mirror receives a laser light beam, the laser light beam is reflected into a collimated light beam by the first mirror surface;
• a second parabolic mirror having a second mirror surface, wherein the second mirror surface is arranged to focus at a second focal length, the second mirror surface faces toward the first mirror surface to receive the collimated light beam, the second mirror surface condenses the collimated light beam and reflects out a convergent light beam, the convergent light beam is focused at a focal point of the second focal length;
• a third parabolic mirror having a third mirror surface, wherein the third mirror surface is arranged to focus at a third focal length, the third mirror surface faces away from the second mirror surface, the third parabolic mirror has a through hole, the convergent light beam passes through the through hole, the second focal length exceeds the third mirror surface and is focused on a sample detecting position, the third parabolic mirror is located between the sample detecting position and the second parabolic mirror, the third mirror surface collects a Raman scattering light reflected by the sample detecting position, and reflects as a collimated detection light beam;
• and
• a fourth parabolic mirror having a fourth mirror surface, wherein the fourth mirror surface is arranged to focus at a fourth focal length, the fourth mirror surface collects the detection light beam and condenses to an output light beam, the output light beam is focused at a focal point of the fourth focal length;
• a light beam receiver located at the focal point of the first focal length, used to fix a laser source of the laser light beam and to let the laser light beam pass through and direct toward the first parabolic mirror;
• and
• a spectrometer receiving the output light beam.