Search Semrock's website:

RazorEdge® Raman Filters
Five Year Warranty

     Ultrasteep edge filters for unparalleled discrimination
30-day Return Policy

RazorEdge Filter

   

25 mm diameter filters
b b b b b
25 mm x 36 mm filters
 (for standard microscopes)

Introducing RazorEdge "E-grade" filters with the steepest edges available – only 0.2% of the laser wavelength!

New to our lineup are EdgeBasic filters. Perfect when cost is critical yet you need edge filters that will perform well and last for the duration of your system.

Most products ship on the next business day

Custom sizing in one week

For our volume OEM customers Semrock tailors optical filters to meet or exceed even the most demanding requirements. Please contact us to discuss your needs.

RoHS Compliant

Useful Information

Types of Raman Filters  This brief tutorial describes the basic functions of different types of filters for Raman spectroscopy systems.

Raman System Layouts  Take a look at examples of typical system setups with and without a dichroic beamsplitter.

Edge Filters vs. Notch Filters  Trying to decide between an edge filter and a notch filter for Raman? Find out more ...

Angle Dependence of Spectra  How does the spectrum of a RazorEdge filter depend on the angle of incidence?

Laser Damage Threshold  A brief tutorial defining laser damage threshold for pulsed and continuous wave lasers.

Semrock hard-coated filters CAN be cleaned!  It's easy. See how.
Related Products

MaxLine® laser-line filters transmit precise laser lines and block adjacent wavelengths.

StopLine® deep notch filters block laser lines and transmit adjacent wavelengths.

MaxMirror® ultra-broadband laser mirrors provide high reflection over a wide range of wavelengths and angles.
More Useful Information
Don't see a part number you've ordered previously? Semrock is constantly increasing and improving our product offerings. See the Filter Evolution Table for a list of replacement part numbers.
RazorEdge Filters are Unique
Semrock stocks the widest selection of Raman-spectroscopy grade edge filters available, with edge wavelengths from 224 to 1064 nm. These filters are so steep and highly transmitting that they out-perform even the leading holographic notch filters, yet are less than half the price! Now you can see the weakest signals closer to the laser line than you ever have before. With their deep laser-line blocking, ultra-wide and low-ripple passbands, proven hard-coating reliability, and high laser damage threshold, they offer performance that lasts. RazorEdge filter technology is so unique that it is patented (U.S. Patent No. 7,068,430 and pending).
  •  Steepest edges to measure even the smallest Raman shifts
  •  Deep laser-line blocking for maximum laser rejection (> OD 6)
  •  High signal transmission to detect the weakest signals (> 98% typical)
  •  High laser damage threshold and proven reliability (1 J/cm2 for 532 nm)
  •  Rejected light is reflected, for convenient alignment and best stray-light control
  •  UV long-wave-pass filters, for wavelengths as short as 224 nm!
Copyright © 2008 Semrock, Inc.