Semrock® Filters from BioVision Technologies

Semrock manufactures the highest performance and reliability optical filters available for Biotech and Analytical Instrumentation. All Semrock filters are manufactured with the advanced Ion Beam Sputtering (IBS) process – already regarded as the premier optical coating technology, and taken to the next level by Semrock.

Semrock fluorescence, Raman and laser filters have amazing performance, and all Semrock filters are hard coated (absolutely no exceptions) ensuring that they do not shift or degrade under prolonged exposure to humidity. Further, Semrock filters do not burn out under the intense light sources commonly used in fluorescence applications.

BrightLine® Fluorescence Filters and Filter Sets

Semrock’s BrightLine fluorescence filters are superior to conventional filters. The BrightLine filters are brighter and provide better contrast, They are far more durable – they do not suffer from the conventional filter “burn-out,” and can even be cleaned with alcohol or acetone. Semrock produces a complete line of fluorescence filter sets that are optimized for fluorescence microscopy applications:

Semrock’s lines of individual filters are these:

• BrightLine Single Bandpass & Edge Filters
• EdgeBasic™ Long Wave Pass Filters
• BrightLine Multiband Bandpass Filters
• BrightLine Single-Edge Dichroic Beamsplitters
• BrightLine Multi-edge Dichroic Beamsplitters
• BrightLine Multiphoton Fluorescence Filters

RazorEdge® Raman Filters

Semrock produces 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 – at less than half the price! 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!

Semrock’s lines of RazorEdge filters are these:

MaxLine® Laser-line Filters

Compact and affordable MaxLine thin-film filters offer the following unique advantages:

• Highest transmission exceeding 90% at the laser line – stop wasting expensive laser light!
• Rapid roll-off to an optical density > 5 at wavelengths differing by only 1% from the laser wavelength – give your laser > 50 dB side mode suppression!
• Negligible temperature dependence for maximum temperature range
• Hard dielectric coatings for proven reliability and durability
• Rejected light is reflected for convenient spatial separation
• UV laser-line filters for 248.6 and 266.0 nm!

MaxLine Laser-line Filters Catalog on Semrock’s Web site

MaxLine 45° Laser-line Beamsplitters Catalog on Semrock’s Web site

MaxDiode™ Laser Diode Clean-up Filters

At last – clean-up filters that are specially designed for popular diode lasers. Our MaxDiode filters are guaranteed to have an unprecedented 90% transmission over a carefully tailored range of each diode laser’s expected wavelengths, with ultralow passband ripple for assured consistency, all while dramatically reducing unwanted out-of-band spectral noise (especially spontaneous emission). MaxDiode hard-coated filters offer the following unique advantages:

• Highest transmission exceeding 90%, over a carefully tailored range of each diode's possible laser wavelengths
• Square ultralow-ripple passband for total consistency as the laser ages, over temperature, or when replacing a laser
• Extremely steep edges transitioning to very high blocking to filter out the undesired out-of-band noise
• “No burn-out” hard-coating technology, for lower cost of ownership and
  proven reliability

MaxDiode Laser Diode Clean-up Filters Catalog on Semrock’s Web site

StopLine® Thin-film Notch Filters

StopLine normal-incidence laser-line notch filters are ideal for applications including Raman spectroscopy, laser-based fluorescence instruments, and biomedical laser systems.

Semrock StopLine optical notch filters offer a convenient and reliable thin-film format with performance so advanced that they are patented (U.S. Patent No. 7,123,416). And even though StopLine notch filters are much less expensive than holographic notch filters, they simultaneously offer:

• Deep (OD > 6) laser-line blocking for maximum laser rejection
• Narrowest bandwidth thin-film notch filters (as low as 9 nm)
• High signal transmission (> 90%) to detect the weakest signals
• High laser damage threshold (> 1 J⁄cm² for 532 nm)
• Negligible temperature dependence for maximum temperature stability
• Hard dielectric coatings for proven reliability
• Rejected light is reflected, for convenient alignment and best stray-light control

StopLine Thin-film Single Notch Filters Catalog on Semrock’s Web site

StopLine Thin-film Multi-Notch Filters Catalog on Semrock’s Web site

StopLine 45° Notch Beamsplitters Catalog on Semrock’s Web site

MaxMirror® Ultra-broadband Laser Mirror

The MaxMirror is a unique high-performance laser mirror that covers an ultra-broad range of wavelengths – it can replace three or more conventional laser mirrors. In fact, it is so unique that it is patented (US Patent No. 6,894,838).

• Very highly reflecting over:
  • Near-UV, all Visible, and Near-IR wavelengths
  • All states of polarization
  • All angles from 0 to 50° inclusive simultaneously
• High laser damage threshold and proven reliability
• Laser-quality flatness

MaxMirror Ultra-broadband Laser Mirror Catalog on Semrock’s Web site

Further Information

Please contact BioVision Technologies for more information on Semrock filters and filter sets.