Espectrómetros Raman - 532 nm

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532nm laser excitation is a common wavelength chosen for Raman spectroscopy. This is because the Raman scattering efficiency in this region is very high. Green lasers typically can be good for metal oxides, minerals, or other inorganic materials and resonance Raman experiments (e.g. for carbon nanotubes and other carbon materials). Since scattering efficiency is high, there is less need for high power excitation which could possibly burn darker samples. Also, spectrometers configured for 532nm Raman can cover a wider wavenumber shift such as 200-5.250 cm-1 which allows you to see valuable information such as -NH and -OH functional groups found at 2.800 and 3.700cm-1 respectively.

-Raman-HR-TEC-532 Spectrometers: are our most popular 532 Raman spectrometers and include an enhanced CCD array detector tuned for 532nm Raman with advanced detector lens assembly for ultra sensitivity at long exposure times.

-Raman-ER-TEC-532 Spectrometers: extended range Raman spectrometers include an enhanced CCD array detector tuned for 532nm Raman with advanced detector lens assembly for ultra sensitivity at long exposure times.

-Raman-HR-TEC-X2-532 Spectrometers: offer 2-stage detector cooling for ultimate sensitivity and performance. Great for long exposures up to 8 minutes.

Raman-SR spectrometers: are typically recommended for OEM and portable applications where the specific sample set is known and works well without detector cooling.

As always with StellarNet instrumentation, the fiber optically coupled Raman spectrometer series is extremely ruggedized and compact for portable and field applications.

Model Ranges and Resolutions

Raman Spectrometer	Wavelength Range (cm-1)	Resolution (cm-1)	Integrated 1-Stage TE Cooler	TEC-X2 Option
Raman-HR-TEC-532	200-3.100	5	Yes	Yes
Raman-ER-TEC-532	200-5.250	9	Yes	Yes
Raman-SR-532	200-5.250	15	No	No

ER = Extended Range

HR = High Resolution

SR = Standard Resolution

Specifications for StellarNet Raman Configured Spectrometers

Optical Parameters

Optical Resolution:	HR= 5 cm-1 ER = 9 cm-1 SR = 15 cm-1
Spectral Range:	HR = 200-3.100 cm-1 ER= 200-5.250 cm-1 SR= 200-5.250 cm-1 Early Start Available
Diffraction Gratings:	2400/1200 g/mm with gold surface
Stray Light:	<0.05%
Optical Input:	SMA-905

Detector & Electronics

Detector Type:	SONY ILX CCD 2048 pixels 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%

Physical

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 Linux
Interface:	USB-2 (Wifi & Webserver Options)
Software:	SpectraWiz, SpectraWiz-ID, LabView, Spectroscopy Pro-tools, Delphi, C, C#

Accessories:

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-Probe-532: Attaches to 532nm 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-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.

Raman-Probe-HT: High Temperature Raman probe to 200 deg C

Raman-Probe-Immersion: Immersion Raman Probes for 532nm 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 532nm 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.

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