Raman spectroscopy at 638 nm combines strong signal intensity with typically lower autofluorescence. Since Raman signal strength decreases with the fourth power of wavelength, 638 nm excitation provides greater Raman sensitivity than 785 nm while producing less fluorescence than 532 nm. 638nm excitation is typically used for SERS and Raman spectroscopy of trace analytes.
Available in laboratory and OEM form factors, the robust, modular opto-mechanical WP 638 X series supports both fingerprint and functional Raman ranges. It can be configured for laser integration, optical coupling, f/#, detector cooling and slit width.
Spectrometer (-IC)
Spectrometer + Laser (-ILC)
Spectrometer Input
Fiber-coupled SMA 905 connector
(FC/PC, free space collimating lens or open slit upon request)
Fully integrated sampling optics:
22 mm working distance
Communications
Laboratory/housed units: 24.3 x 17.2 x 6.0 cm, <2.3 kg
OEM modules on a baseplate: 23.6 x 16.5 x 5.3 cm, <1.3 kg
Detector Cooling Options
TEC-Regulated (-R)
TEC-Cooled (-C)
SPECTROMETER
(-IC MODEL)
270–3800 cm-1
270–3500 cm-1
Resolution
(25 μm slit)
9 cm-1
10 cm-1
f/1.8 input
7 cm-1
8 cm-1
Detector TEC setpoint
3 ms
OPTIONAL INTEGRATED LASER
(-ILC, -ILP MODELS)
Laser type
638 nm, multimode
OPTIONAL INTEGRATED PROBE
(-ILP MODEL)
Raman at 638 nm is a good alternate to the more popular Raman wavelength of 785 nm and is often used for applications like SERS (surface enhanced Raman spectroscopy). The choice between a flexible, probe-based Raman system and a fully integrated, compact one depends largely upon which optical coupling method is best for your application or sample.
This unique ‘OEM Inside’ approach allows you to streamline both the instrument design and the product development process, with less risk. You focus on developing your turnkey solution, while we focus on providing superior Raman hardware. Explore our performance-equivalent WP 638X OEM models:
Product Sheets
Example 1
Example 2
