758nm Example Raman Spectra-
StellarNet offers a variety of high performance spectrometers configured for 785nm Raman spectroscopy applications that perform quick identification of a variety of liquid, solid, or powder samples. 785nm laser excitation is the most common wavelength chosen for Raman spectroscopy. This is because the red laser has a good balance between Raman efficiency, sample fluorescence, and heat absorption. Likewise 785nm lasers are typically less expensive that other frequencies allowing total system price to be very economical.
Raman-HR-TEC-785 Spectrometers are our most popular Raman spectrometers and include an enhanced CCD array detector tuned for 785nm Raman with advanced detector lens assembly for ultra sensitivity at long exposure times.
Raman-HR-TEC-X2-785 Spectrometers offers 2-stage detector cooling for ultimate sensitivity and performance! Great for long exposures up to 8 minutes.
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.
StellarCASE-Raman-785 is a portable and rugged Raman System for “Open & Measure” Application. This complete system includes a high performance Raman spectrometer (Raman-HR-TEC-785), High power Laser, and vial holder. More Info…
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
785nm Raman Spectrometers
|Optical Resolution:||HR= 4 cm-1
SR = 8 cm-1
|Spectral Range:||HR = 200-2,750 cm-1
SR= 200-3,200 cm-1
Early Start Available
|Diffraction Gratings:||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= 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#|
785nm Laser Options
785nm Raman Probes & Accessories
Raman-Probe-785 – Attaches to 785nm 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 785nm 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 785nm Probes
Raman-Probe-HT – High Temperature Raman probe to 200 deg C
Raman-Probe-Immersion Immersion Raman Probes for 785nm 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 785nm 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.
785nm Applications Notes
Frequently Asked Questions
Other Raman Spectrometer Wavelengths
Popular Pre-configured Raman Systems
Technical Information Request
StellarNet, Inc. Tampa, Fl USA 10/15/2018 Array Detector Defects and Nonuniformities: All array detectors, both 1D and 2D, will inevitably suffer from defects and pixel-to-pixel nonuniformities due to the limitations of high-volume semiconductor manufacturing...read more