Adjustable feedback laser modulator

Claim 1

AN ADJUSTABLE FEEDBACK LASER MODULATOR SYSTEM WHICH COMPRISES (A) A LASER ELEMENT, (B) LIGHT INPUT AND OUTPUT ENDS ON SAID LASER ELEMENT, (C) A LIGHT SOURCE FOR OPTICALLY PUMPING SAID LASER ELEMENT TO PRODUCE AN OUTPUT LIGHT BEAM, (D) A PARTIALLY REFLECTIVE MIRROR ADJACENT SAID OUTPUT END POSITIONED ACROSS THE PATH OF SAID OUTPUT LIGHT BEAM, (E) SAID PARTIALLY REFLECTIVE MIRROR REFLECTING A SMALL PORTION OF SAID LIGHT BEAM IN A PATH AT RIGHT ANGLES TO SAID OUTPUT LIGHT BEAM AND PASSING THE REMAINDER OF SAID LIGHT BEAM, (F) AN OPTICAL MEANS POSITIONED IN THE PATH OF SAID LIGHT BEAM PASSING THROUGH SAID PARTIALLY REFLECTIVE MIRROR, (G) SAID OPTICAL MEANS POLARIZING SAID LIGHT BEAM AND SEPARATING SAID LIGHT BEAM INTO A MAIN POLARIZED BEAM AND A SECOND POLARIZED BEAM AT AN ANGLE WITH RESPECT TO THE MAIN BEAM, (H) SAID MAIN BEAM CONTINUING ON TO PERFORM A DESIRED WORK FUNCTION AND SAID ANGULARLY DIRECTED BEAM BEING FEED BACK THROUGH AN OPTICAL FEED-BACK SYSTEM TO THE INPUT END OF SAID LASER ELEMENT, (1) SAID FEEDBACK SYSTEM INCLUDING IN ORDER IN THE DIRECTION OF THE PATH FOLLOWED BY SAID SECOND POLARIZED BEAM FROM SAID OPTICAL MEANS TO THE INLET OF SAID LASER ELEMENT; A FULLY REFLECTING MIRROR, A QUARTZ 45* ROTATOR, A WOLLASTON PRISM, A FARADAY ROTATOR, A SECOND WOLLASTON PRISM, TWO SUCCESSIVE FULLY REFLECTING MIRRORS AND A KERR CELL, AND (J) A KERR CELL CONTROL CIRCUIT OPERATIVE BY SAID SMALL PORTION OF SAID LASER OUTPUT BEAM REFLECTED FROM SAID MAIN BEAM BY SAID PARTIALLY REFLECTIVE MIRROR IN THE PATH OF THE LASER OUTPUT BEAM.