Contact Us

Notch Filter

  • Introduction

Notch Filter

The notch filter, in contrast to a narrow band filter, intercepts light in a particular wavelength range by transmitting light at most wavelengths.

Notch filters are useful in applications where it is necessary to filter out the laser light. For example, in drug bioassays, in order to obtain a good signal-to-noise ratio in Raman spectroscopy experiments, it is necessary to suppress the pumping laser, which can be achieved by placing a notch filter on the detection channel. Notch optical filters are also often used in laser-based fluorescence instruments and in biomedical laser systems.

Notch Filter wavelength

Related Content
  • Concave Mirror

    Concave Mirror

    February 17, 2017The concave mirror is the reflection imaging, it is not the light through, but the reflection back to the imaging instrument, the light observes the reflection law. A concave mirror is a spherical mir...view
  • Chalcogenide Lenses

    Chalcogenide Lenses

    February 17, 2017Chalcogenide glass is containing one or more chalcogens (sulfur, selenium and tellurium, but excluding oxygen). Chalcogenide components are becoming popular in various IR applications due to its excel...view
  • Cylindrical Lenses

    Cylindrical Lenses

    February 17, 2017Cylindrical lenses are used to focus, expand or condense light into a single dimension. Cylindrical lenses are widely used in laser scanners, optical information processing and computing, dye lasers o...view