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Filter for the fluorescence / Raman analysis

蛍光・ラマン分析

Laser raman spectrum

Here we introduce a series of filters, which are used in Fluorescence and Raman spectroscopy.

Fluorescence analytical instrument

Fluorescence
analysis
It is an analytical method, which takes an advantage of the characteristic that fluorescent material emits light at one wavelength when excited by an incident beam of a different wavelength.
Raman
spectroscopy
Raman effects was discovered in 1928 by Dr. V. Raman who was Indian and was the first Nobel prize-winner in Asia.
This is an analytical method, which is used in wide fields such as spot area analysis combined with a Laser, which was invented in 1960s and with optical microscope in late 1970s.These measurement instruments deal with very fine and weak signals and as a consequence the optical elements are require high performance.

Configuration of optical filers in Fluorescent and Raman analysis is shown in figure.

固体レーザーの発振原理

Advantage

Optimized film design
for the demands
Filter shape and optical properties are designed for the targeted application specially.
Various combination you can select any excitation wavelength or emission wavelength range and slope for angle of incidence for elimination.
Low self-luminous The self –luminous is almost none because of fused silica is used as substrate material.
Durability The filters show proven hard-coating reliability, and high laser damage threshold.
Image quality The filters have smooth surface, which lead low scattering and clear images.

Application field

Biotechnology, Pharmaceuticals, foods, Beverages, Environment, Industry, Chemistry, Raman spectroscopy, Fluorescence microscopy applications.

Characteristic example

532nm Steep long pass filter

532nm Deep blocking notch filter

550 & 625nm Dual notch filter