I am interested in whether the combination of a spectrometer and a tunable notch filter with notch frequencies at the visible red, green and blue wavelengths which have very fast response times could be used to deflect laser beams aimed at airplane windows. The purpose of the spectrometer is to detect the wavelength(lambda) of the incoming laser beam and then tune the optical notch filter to the notch wavelength lambda.
I am currently reading a paper,
Independently tunable optical notch filter based on double ring resonator structure, J. Zhang, S. Guo, X. Li. Optik 124 no. 12 (2013), pp.1307-1310.
This paper describes a tunable optical notch filter based on the Mach-Zehnder interferometer (MZI) with cascaded double ring resonator structures. Does anyone know whether the optical notch filter described in this paper could be used to deflect red, green or blue laser beams aimed at airplane windows?
I am also reading a paper,
Demonstration of a Tunable Microwave-Photonic Notch Filter Using Low-Loss Silicon Ring Resonators, M. Rasras, et al. J. Lightwave Technol. 27 no. 12 (2009), p. 2105.
This paper discusses how to use thermo-optic phase shifters to set the coupling ratios, all pass filter phases and the Mach-Zehnder input-output couplers. While thermo-optic phase shifters can be tuned in milliseconds, subnanosecond tuning speeds should be achievable using technology currently being explored for the high-speed modulators such as carrier injection or carrier depletion in a reversed biased junction. The tuning speed must be fast as possible for the laser beam deflector to react as fast as possible to laser beams aimed at airplane windows