eXtreme Efficiency Spectrometer Gratings

Ideal for Raman and Optical Coherence Tomography

XE spectrometer gratings are holographic, fused silica transmission gratings intended for instrument makers that build Raman, OCT, or other high efficiency spectrometer instruments. Our XE spectrometer gratings offer the following key benefits

Extremely high efficiency for both TE and TM polarization
Very low polarization dependence
Excellent thermal stability
Very low stray light

Applications

XE gratings are specially designed for narrow band, low light spectroscopy like Raman and OCT.

Technology

XE gratings from Ibsen are produced by holographic stepper technology in 100% dielectric materials. This leads to unbeatable thermal and environmental stability, with no polymers, epoxies, gelatins or metals in the optical path nor in the grating whatsoever. Advanced etching technology ensures high diffraction efficiency and low polarization dependence over a very broad bandwidth of several hundred nm. Low angular sensitivity is an added bonus for module design and assembly.

Products

Band	850 nm	1060 nm	1310 nm	1550 nm
Grating resolution	1765 l/mm	1379 l/mm	1144 l/mm	940/966 l/mm	1000 l/mm
Illumination wavelength range	785 - 930 nm	1055 - 1085 nm	1274 - 1346 nm	1525 - 1575 nm	1570 - 1610 nm
Angle of incidence	45 deg	45 deg	50 deg	50 deg	50 deg
Materials	Fused silica
Chip thickness	0.625 mm

Example efficiency plot

850 nm Typical Grating Performance

For more information

Get in contact with a Sales Applications Engineer, to get more information about our XE gratings and discuss you specific OEM project needs.