SureBlock™ XLF Notch Filter

SureBlock XLFOndax’s SureBlock™ XLF Notch Filter System boosts the performance of single-stage Raman spectrometers to triple-stage levels, providing outstanding eXtreme Low-Frequency resolution while maintain­ing exceptional throughput. Incorporating two SureBlock™ ultra narrow-band notch filters in a pre-aligned, light-tight enclosure, the SureBlock™ XLF delivers >OD 8 Rayleigh suppression capability, enabling the simultaneous capture of both Stokes and anti-Stokes Raman signals down to 10cm-1. The SureBlock™ XLF can be configured with either free-space or fiber-coupled inputs and outputs, enabling flexible integration with a wide variety of existing commercial spectrometers. Available at standard Raman wavelengths including: 488nm, 514nm, 532nm, 633nm, 78Xnm. Custom wavelengths and integration options are available by request.

Table 1: SureBlock™ XLF Specifications

Parameter

488nm

514nm

532nm

633nm

78Xnm

Spectral Transition Width (center to 50% transmission)

<10cm-1

<10cm-1

<10cm-1

<10cm-1

<10cm-1

Optical Density at Laser Line (each filter)

>4

>4

>4

>4

>4

Expected System Optical Density

>8

>8

>8

>8

>8

Typical Transmission Efficiency (each filter)

60%

65%

70%

80%

90%

Free Space Aperture Diameter

Standard: 9mm, Custom sizes available

Fiber Input/Output Connector Type

Recommended: FC/PC, Others available upon request