One solution for avoiding the influence of troublesome Raman fluorescence is to use shorter wavelengths such as 405nm. Likewise, the natural Raman signal increase with the scattering dependence of 1/λ4 make Raman spectroscopy at this wavelength favorable.
StellarNet offers a variety of high performance spectrometers configured for 405nm Raman spectroscopy applications that perform quick identification of a variety of liquid, solid, or powder samples.
Raman-HR-TEC-405 Spectrometers are our most popular Raman spectrometers and include an enhanced CCD array detector tuned for 405nm Raman with advanced detector lens assembly for ultra sensitivity at long exposure times.
Raman-HR-TEC-X2-405 Spectrometers offers 2-stage detector cooling for ultimate sensitivity and performance! Great for long exposures up to 8 minutes.
Raman-ER-TEC-405 Spectrometers are chose for extended wavenumber shifts.
Interchangeable Slits Upgrades are available for “HR” optical benches to allow more application flexibility. High Scattering samples can be measured with the smallest slit for highest resolution and weak Raman can be measure with a larger slit to allow for increased light throughput.
Raman-SR spectrometers are typically recommended for OEM and portable applications where the specific sample set is known and works well without detector cooling.
Model Ranges and Resolutions
|Raman Spectrometer||Wavelength Range|
|Resolution (cm-1)||Integrated 1-Stage TE Cooler||TEC-X2 Option|
SR = Standard Resolution
HR = High Resolution
ER = Extended Range
405nm Raman Spectrometers
|Optical Resolution:||HR= 9 cm-1
ER = 15 cm-1
SR = 20 cm-1
|Spectral Range:||HR = 200-5,050 cm-1
ER= 200-8,250 cm-1
SR= 200-8,250 cm-1
Early Start Available
|Diffraction Gratings:||2400/1200 g/mm with gold surface|
|Detector & Electronics|
|Detector Type:||SONY ILX CCD
14um x 200um
|Detector Lens:||Advanced cylindrical lens assembly|
|Thermo Electric Cooling:||1 Stage = -15 Deg C
2 Stage = -30 Deg C
|Exposure Times:||- 20s without TEC
- 60s with TEC
- 8 minutes with TEC-X2!
|Signal to Noise:||>1000:1
@ Exposure time above 30s TEC 1 has >50% noise reduction and TEC-X2 has >80%
|Dimensions:||HR/ER= 6 x 17 x 15.5 cm SR = 2.5 x 7.6 x 12.7cm|
|Weight:||HR= 1.5 kg
SR= 14 ounces
|Software & Interface|
|Operating System:||Win XP, 7,8,10
(Wifi & Webserver Options)
|Software:||SpectraWiz, SpectraWiz-ID, LabView, Spectroscopy Pro-tools, Delphi, C, C#|
405nm Laser Options
405nm Raman Probes & Accessories
Raman-Probe-405 – Attaches to 405nm laser via FC/APC and spectrometer via SMA 905, has integrated Raman filters and optics (working distance– 4.5mm), high efficiency collection fibers for StellarNet Raman spectrometers
Raman 405nm Probe Accessories
Raman-Probe-TIP – attachements tips can be purchased for additional working distance options. Just screw on to replace
Raman-Probe-TIP-Tele – Telescoping Raman probe tip lens assembly attachment for 3cm working distance. Designed to by mounted on to standard Raman probe with 5mm working distance
RPH4 – Raman Probe Holder block supports 1/2″ vials.
RPH5 – Vertical Raman Probe Holder Block for powder and solids. Samples are placed onto a slide and inserted into the measurement chamber of the block. Includes a laser safety interlock which only allows the laser to fire when the probe is securely seated into the holder.
Specialty Raman 405nm Probes
Raman-Probe-HT – High Temperature Raman probe to 200 deg C
Raman-Probe-Immersion Immersion Raman Probes for 405nm source. Stainless-steel, cylindrical probe head with removable immersion sleeve, overall dimensions 5/8″ (15.8mm) diameter x 8″ (230 mm) length
Raman-Probe-Process – Raman Process Probe for 405nm source. Stainless-steel pressure sleeve specified to 3000 psi and up to 500ºC. Sapphire window and gold seal are resistant to many corrosive chemical environments.
405nm Applications Notes
Frequently Asked Questions
Other Raman Spectrometer Wavelengths
Popular Pre-configured Raman Systems
Technical Information Request
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