Laser Raman Spectrometers NRS-3000 Series Part II.

1. The NRS-300 Series of bench top mounting, singly dispersive micro-Raman spectrometers Build on the proven technology of the Ventuno and NRS-2100 instruments, Emphasizing stability, reliability, ease of operation with PC-controlled optics, And high operator safety through fully enclosed and screened optics. The NRS-300 Series of bench top mounting, singly dispersive micro-Raman spectrometers Build on the proven technology of the Ventuno and NRS-2100 instruments, Emphasizing stability, reliability, ease of operation with PC-controlled optics, And high operator safety through fully enclosed and screened optics.

2. So, we might wonder how and why to select one Raman method or the other� As you can see, there are advantages for both approaches, and in some cases one method�s strength is the other�s weakness- for example fluorescence, because in dispersive Raman the CCD detectors we use can�t �see� much over 1000 nm or so, which limits the laser wavelength a bit On balance, dispersive Raman is definitely the most flexible and powerful of the two, and especially so where samples other than a narrow range of fluorescent materials are going to be examined. In most cases, Dispersive �out-specs� the FT technique as well.So, we might wonder how and why to select one Raman method or the other� As you can see, there are advantages for both approaches, and in some cases one method�s strength is the other�s weakness- for example fluorescence, because in dispersive Raman the CCD detectors we use can�t �see� much over 1000 nm or so, which limits the laser wavelength a bit On balance, dispersive Raman is definitely the most flexible and powerful of the two, and especially so where samples other than a narrow range of fluorescent materials are going to be examined. In most cases, Dispersive �out-specs� the FT technique as well.

3. Opening 4 : The standard system incorporate a compact solid-state laser such as the popular Thermoelectrically cooled 488nm blue, 532nm green, 635nm red and 785nm deep red types With powers in the 10-500mW range. Opening 4 : The standard system incorporate a compact solid-state laser such as the popular Thermoelectrically cooled 488nm blue, 532nm green, 635nm red and 785nm deep red types With powers in the 10-500mW range.

4. There are various ways we can present our Raman spectra. The most popular method is to use a scale of Raman shift in wavenumbers on the horizontal axis and intensity on the vertical. If the spectrometer gives us access to both Stokes and anti-Stokes, the result might look like this, although the actual laser line is relatively so intense that it�s omitted from the plot. Sometimes the Raman shift data are changed to real wavelength, and the scale can be arranged L-R or R-L. The Raman shift value is often referred to as �Kaisers� An interesting little �extra�, the Stokes / anti-Stokes peak intensities can be use to determine the sample temperature... There are various ways we can present our Raman spectra. The most popular method is to use a scale of Raman shift in wavenumbers on the horizontal axis and intensity on the vertical. If the spectrometer gives us access to both Stokes and anti-Stokes, the result might look like this, although the actual laser line is relatively so intense that it�s omitted from the plot. Sometimes the Raman shift data are changed to real wavelength, and the scale can be arranged L-R or R-L. The Raman shift value is often referred to as �Kaisers� An interesting little �extra�, the Stokes / anti-Stokes peak intensities can be use to determine the sample temperature...

5. I�ve mentioned �dual laser� capability several times, but perhaps I�d best explain why this might be necessary� With modern laser Raman we usually use a compact, reliable solid-state green laser. This device uses diode lasers to �pump� a Nd-YAG laser which operates at 1064 nm. The light from this laser is frequency-doubled to give green 532 nm light. This wavelength is about optimum for both Raman efficiency and the detector operating range This slide is an example using Raman spectra from white wine! 532nm light causes a lot of sample fluorescence, so in this case we switched to a 785 nm diode laser, which removes the fluorescence but still gives a nice spectrum I�ve mentioned �dual laser� capability several times, but perhaps I�d best explain why this might be necessary� With modern laser Raman we usually use a compact, reliable solid-state green laser. This device uses diode lasers to �pump� a Nd-YAG laser which operates at 1064 nm. The light from this laser is frequency-doubled to give green 532 nm light. This wavelength is about optimum for both Raman efficiency and the detector operating range This slide is an example using Raman spectra from white wine! 532nm light causes a lot of sample fluorescence, so in this case we switched to a 785 nm diode laser, which removes the fluorescence but still gives a nice spectrum

6. So, we might wonder how and why to select one Raman method or the other� As you can see, there are advantages for both approaches, and in some cases one method�s strength is the other�s weakness- for example fluorescence, because in dispersive Raman the CCD detectors we use can�t �see� much over 1000 nm or so, which limits the laser wavelength a bit On balance, dispersive Raman is definitely the most flexible and powerful of the two, and especially so where samples other than a narrow range of fluorescent materials are going to be examined. In most cases, Dispersive �out-specs� the FT technique as well. New NRS-3000 Series Laser Raman Spectrophotometers feature a unique fully integrated design to guarantee alignment and maximize performance. Full Class 1 laser safety is assured by our Enclosed microscope, high throughput dispersive optics. Singly dispersive instruments offering capability for UV-NIR laser operation together with very low wave number Raman Shift measurement capability and high spectral resolution, Previously limited to triply dispersive instruments. Markedly improved performance over earlier JASCO instruments in several key areas. Sample imaging quality on-screen greatly improved, plus tri-ocular option Higher spectrograph throughput, particularly at NIR wavelengths Greater laser throughput to sample point allowing lower power lasers Simpler data system to instrument control by USB interface Auto alignment of optical path Better access to sample area So, we might wonder how and why to select one Raman method or the other� As you can see, there are advantages for both approaches, and in some cases one method�s strength is the other�s weakness- for example fluorescence, because in dispersive Raman the CCD detectors we use can�t �see� much over 1000 nm or so, which limits the laser wavelength a bit On balance, dispersive Raman is definitely the most flexible and powerful of the two, and especially so where samples other than a narrow range of fluorescent materials are going to be examined. In most cases, Dispersive �out-specs� the FT technique as well. New NRS-3000 Series Laser Raman Spectrophotometers feature a unique fully integrated design to guarantee alignment and maximize performance. Full Class 1 laser safety is assured by our Enclosed microscope, high throughput dispersive optics. Singly dispersive instruments offering capability for UV-NIR laser operation together with very low wave number Raman Shift measurement capability and high spectral resolution, Previously limited to triply dispersive instruments. Markedly improved performance over earlier JASCO instruments in several key areas. Sample imaging quality on-screen greatly improved, plus tri-ocular option Higher spectrograph throughput, particularly at NIR wavelengths Greater laser throughput to sample point allowing lower power lasers Simpler data system to instrument control by USB interface Auto alignment of optical path Better access to sample area

8. Complete operator safety is maintained by the fully enclosed and screened optics and an automated sample chamber door to provide full microscope access. The microscope area is fully enclosed during operation for Class 1 Laser safety, Whilst excellent operator access to the stage and microscope is provided by a 120 degree opening, Full height motorized front door. The door operation is interlocked with laser light path for additional user safety. Complete operator safety is maintained by the fully enclosed and screened optics and an automated sample chamber door to provide full microscope access. The microscope area is fully enclosed during operation for Class 1 Laser safety, Whilst excellent operator access to the stage and microscope is provided by a 120 degree opening, Full height motorized front door. The door operation is interlocked with laser light path for additional user safety.

9. Five easily interchangeable objective lenses can be accommodated on the standard turret. 3 objectives, x5, x20 and x100 to easily find the area of interest are standard. The microscope has a conventional x-y-z focus / translation sample stage, with a precision, software controlled stepping motor drive automation option. Five easily interchangeable objective lenses can be accommodated on the standard turret. 3 objectives, x5, x20 and x100 to easily find the area of interest are standard. The microscope has a conventional x-y-z focus / translation sample stage, with a precision, software controlled stepping motor drive automation option.

10. Easily interchangeable objective lenses can be accomplished on the standard turret. X5, X20 and X100 magnifications are available.Easily interchangeable objective lenses can be accomplished on the standard turret. X5, X20 and X100 magnifications are available.

11. With superb stability and effortless software controlled optics, The NRS-3000 systems offer productivity second to none, With no time-consuming realignment. Simply insert the sample, Foxus, and collect the sample spectrum. The integrated, automated x-y-z mapping stage option Allows full PC control.With superb stability and effortless software controlled optics, The NRS-3000 systems offer productivity second to none, With no time-consuming realignment. Simply insert the sample, Foxus, and collect the sample spectrum. The integrated, automated x-y-z mapping stage option Allows full PC control.

12. The microscope has a conventional x-y-z focus / translation sample stage.The microscope has a conventional x-y-z focus / translation sample stage.

14. All instruments include a color CCDTV sample viewing system With image capture capability. All instruments include a color CCDTV sample viewing system With image capture capability.

15. For additional flexibility, a trinocular (binoculars + camera port microscope attachment Can be added for both direct binocular viewing And an optional high-resolution color or black and white TV camera port.For additional flexibility, a trinocular (binoculars + camera port microscope attachment Can be added for both direct binocular viewing And an optional high-resolution color or black and white TV camera port.

16. Software controlled stepping motor drive automation of sample stage with joystick is optional. Software controlled stepping motor drive automation of sample stage with joystick is optional.

17. Software controlled stepping motor drive automation of sample stage with joystick is optional. Software controlled stepping motor drive automation of sample stage with joystick is optional.

20. So, we might wonder how and why to select one Raman method or the other� As you can see, there are advantages for both approaches, and in some cases one method�s strength is the other�s weakness- for example fluorescence, because in dispersive Raman the CCD detectors we use can�t �see� much over 1000 nm or so, which limits the laser wavelength a bit On balance, dispersive Raman is definitely the most flexible and powerful of the two, and especially so where samples other than a narrow range of fluorescent materials are going to be examined. In most cases, Dispersive �out-specs� the FT technique as well.So, we might wonder how and why to select one Raman method or the other� As you can see, there are advantages for both approaches, and in some cases one method�s strength is the other�s weakness- for example fluorescence, because in dispersive Raman the CCD detectors we use can�t �see� much over 1000 nm or so, which limits the laser wavelength a bit On balance, dispersive Raman is definitely the most flexible and powerful of the two, and especially so where samples other than a narrow range of fluorescent materials are going to be examined. In most cases, Dispersive �out-specs� the FT technique as well.