Abstract 1,015,154. Optical masers. WESTERN ELECTRIC CO. Inc. Oct. 4, 1962 [Oct. 16, 1961], No. 37498/62. Heading H3B. The resonant cavity of an optical maser is bounded by two parallel reflecting surfaces 21 and 24 between which is placed at least one partially transmitting reflector 22, 23 to divide the cavity into a number of gaps at least one of which contains a negative temperature material. The effect of the additional reflecting surfaces is to improve the made discrimination and it is stated that for optimum results the laser of Fig. 2 should have the reflectivity of the end mirrors 21 and 24 at least as great as that of mirrors 22 and 23. It is also stated that the length of the gaps which do not contain negative temperature material should be (2#v)<SP>-1</SP> where #v is the half width of the fluorescent emission line of the active medium.
AN OPTICAL MASER COMPRISING AN ELONGATED OPTICAL CAVITY RESONATOR HAVING FLAT PARALLEL REFLECTIVE END MEMBERS, AT LEAST ONE FLAT REFLECTIVE INTERIOR MEMBER WITHIN SAID RESONATOR SPACED AXIALLY FROM SAID END MEMBERS AND PARALLEL THERETO, SAID INTERIOR MEMBER AND AT LEAST ONE OF SAID END MEMBERS BEING PARTIALLY TRANSMISSIVE TO LIGHT WAVE ENERGY AT THE OPERATING FREQUENCY, AT LEAST ONE END MEMBER OF SAID RESONATOR HAVING A REFLECTIVITY SUBSTANTIALLY AS GREAT AS THAT OF THE FACING INTERIOR REFLECTIVE MEMBER OF SAID RESONATOR, SAID END AND INTERIOR MEMBERS DEFINING A PLURALITY OF GAPS IN SAID CAVITY RESONATOR, AT LEAST ONE GAP IN SAID RESONATOR HAVING AN OPTICAL LENGTH
Claim 2
Dependent Claim
106 words
AN OPTICAL MASER COMPRISING AN ELONGATED OPTICAL CAVITY RESONATOR HAVING FLAT PARALLEL REFLECTIVE END MEMBERS, AT LEAST ONE FLAT REFLECTIVE INTERIOR MEMBER WITHIN SAID RESONATOR SPACED AXIALLY FROM SAID END MEMBERS AND PARALLEL THERETO, SAID INTERIOR MEMBER AND AT LEAST ONE OF SAID END MEMBERS BEING PARTIALLY TRANSMISSIVE TO LIGHT WAVE ENERGY AT THE OPERATING FREQUENCY, AT LEAST ONE END MEMBER OF SAID RESONATOR HAVING A REFLECTIVITY SUBSTANTIALLY AS GREAT AS THAT OF THE FACING INTERIOR REFLECTIVE MEMBER OF SAID RESONATOR, SAID END AND INTERIOR MEMBERS DEFINING A PLURALITY OF GAPS IN SAID CAVITY RESONATOR, AT LEAST ONE GAP IN SAID RESONATOR HAVING AN OPTICAL LENGTH