Authors: Dhananjay P. Mehendale
We propose novel technique for detecting gravitational waves using facilities at LIGO with certain changes and additions in the present setup. We suggest replacing the perfectly reflecting mirrors fixed at the ends of the arms of interferometer by exactly identical photo detectors. We propose to use high energy laser to ensure well defined quantized form for the radiation. We make provision to determine maximality of incident intensity of light packet falling on the photo detector and further make provision to check whether this peak intensity is simultaneous in reaching both the detectors. Simultaneity of reaching of peak intensity is used to provide high inputs to something like logical AND gate. These provisions like logical AND gate will be sending high output if and when peak intensity will hit both the photo detectors simultaneously. This high output of logical AND will be used to operate a counter to go one count up. We suggest utilizing the simultaneous arrival of light packets with exactly equal peak intensity at detector to give an up count in the counter. These light packets are running in two orthogonal arms, originally emerged from a pulsed laser source and split into two beams by beam splitter, We propose to measure counts that will be shown by the counter after a sufficiently long interval of time. Now, if over this sufficiently long period any gravitational waves will pass through the apparatus they will cause stretching and squeezing of interferometer arms in a reciprocal way and the pulses directed towards photo detectors from beam splitter will not reach these detectors simultaneously with exactly equal peak intensity. This will be causing turning on of the logical AND lesser number of times leading in effect to lesser number of counts that will be recorded by the counter. From this record of lesser number of counts, less than the expected number when no gravitational waves reach the apparatus, we can conclusively infer that gravitational waves have certainly passed through the apparatus! Instead of laser one may consider using a well regulated uniform beam of particles, like electrons, to fall on beam splitters with relevant replacements in the detection apparatus in place of perfectly reflecting mirrors and again using same methodology for the detection.
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