Variable Bandpass Filter

Turn your supercontinuum source into a high power tunable laser

The unique SuperK VARIA is a cost effective and flexible alternative to a monochromator, effectively turning the SuperK supercontinuum white light source into a powerful single-line laser with a 420 nm tuning range and variable bandwidth. The center wavelength of the pass band can be tuned anywhere between 400 and 820 nm and the bandwidth is variable between 2 and 100 nm, making the SuperK VARIA the most flexible filter solution on the market. Increasing the bandwidth of the filter has the added advantages of higher power throughput and reduced speckle in imaging applications. Moreover, a high out-of-band suppression of up to 50dB makes the SuperK VARIA an ideal tool for FLIM and other applications using high sensitivity detectors.

The SuperK VARIA is designed to be used with the SuperK supercontinuum sources, but can also used with traditional laser systems or broadband light sources. Use the collimated free-space output from the filter directly or combine the VARIA with the SuperK CONNECT broadband fiber delivery system for pristine single-mode fiber delivery over the entire tuning range in one single fiber.

• 400 - 820 nm wideband coverage
• 4 – 100 nm variable bandwidth, for higher power and reduced speckle
• Up to 50 dB suppression of out-of-band light
• High transmission (no polarization loss)
• Handles high average power
• Single-mode fiber delivery
• Available with Power Lock active output power stabilization
• Fully computer controlled

Download the
SuperK VARIA
datasheet

SuperK VARIA output from a SuperK EXTREME EXW-12. The graph shows the output from the supercontinuum laser, the filtered channel tuned to different wavelengths and the output power per wavelength (right axis).