266nm 대역통과 필터

Context: An airborne LIDAR system that replaces physical pitot tubes with optical sensors to measure air data parameters.

Usage of Filter: Integrated within a Fabry-Pérot interferometer receiver assembly.

Function: It acts as a spectral sieve to strictly isolate the 266nm backscattered laser light, rejecting background solar radiation (which is naturally low in this "solar blind" UV region) and other stray light.

Result: Achieves precise measurement of wind velocity, air density, and temperature by analyzing the Doppler shift of the filtered light.

Context: A diagnostic medical device that analyzes brain tissue to detect neurodegenerative diseases without using chemical dyes.

Usage of Filter: Placed in the excitation path to clean the laser source and/or in the emission path to block the 266nm excitation light while passing the auto-fluorescence signal.

Function: Purifies the 266nm excitation beam to ensure it specifically excites the amino acid Tryptophan (which has a peak absorption/emission distinct to 266nm excitation).

Result: Achieves the detection of biomarker anomalies (Tryptophan levels) associated with Alzheimer’s and Parkinson’s disease.

Context: A robotic sterilization system using directed UV lasers to disinfect surfaces in hospitals or laboratories.

Usage of Filter: Used within the laser output module (often a harmonic separator).

Function: Isolates the 266nm (4th harmonic) UV-C beam by blocking the residual fundamental (1064nm) and second-harmonic (532nm) wavelengths generated by the Nd:YAG laser source.

Result: Achieves rapid, non-contact sterilization of target areas (1-4 mm²) by delivering high-intensity germicidal UV radiation without heating the surface.