-
Patent Agency Ranking
公开(公告)号：US3571744A
公开(公告)日：1971-03-23
申请号：US3571744D
申请日：1967-03-23
Applicant: TRW INC
Inventor： HOOK WILLIAM R , DISHINGTON ROLAND H
CPC classification number: H01S3/115
Abstract: Lasers in which there is time variable reflectivity of the laser cavity during the lasing process. The time variable reflectivity relates to the variation of the reflectivity in the cavity during the power buildup prior to lasering and during the lasering by varying the voltage at predetermined times to a polarity rotating means within the cavity and which acts to partially or totally effectively remove the reflectivity of one of the substantially 100 percent mirrors at the ends of the cavity.
-
2.发明授权
公开(公告)号：US3564454A
公开(公告)日：1971-02-16
申请号：US3564454D
申请日：1967-11-28
Applicant: TRW INC
Inventor： HOOK WILLIAM R , DISHINGTON ROLAND H , HILBERG RONALD P
CPC classification number: H01S3/115
Abstract: LASER APPARATUS IN WHICH A PLURALITY OF MIRRORS ARE POSITIONED TO DEFINE A RESONANT LASER CAVITY, THE LASER CAVITY HAVING FIRST SECOND, AND THIRD RADIANT ENERGY PATHS ARRANGED TO INTERSECT AT A COMMON POINT TO FORM A GENERALLY Y-SHAPED CONFIGURATION, THE MIRRORS EACH BEING POSITIONED AT THE END OF ONE OF THE PATHS. A SOURCE OF LASER RADIATION IS POSITIONED IN THE CAVITY TO RADIATE LSER ENERGY ALONG THE FIRST PATH. A ROCHON PRISM IS PROVIDED WITHIN THE CAVITY AT THE COMMON POINT FOR DIRECTING RADIATION OF ONE POLARITY RADIATING ALONG THE FIRST PATH FROM THE SOURCE OF RADIATION INTO THE SECOND PATH AND RADIATION OF ANOTHER POLARITY INTO THE THIRD PATH, THE PRISM BEING CAPABLE OF DIRECTING THE RADIANT ENERGY OF ONE POLARITY RETURNING ALONG THE SECOND PATH INTO THE FIRST PATH AND THE RADIANT ENERGY OF THE OTHER POLARITY RETURNING ALONG THE THIRD PATH INTO THE FIRST PATH. A SECOND ROCHON PRISM IS POSITIONED IN THE SECOND PATH, THE SECOND PATH ROCHON PRISM BEING CAPABLE OF PASSING RADIANT ENERGY OF ONE POLARITY RETURNING ALONG THE SECOND PATH AND DIRECTING RADIANT ENERGY OF ANOTHER POLARITY INTO A PATH LEADING OUT OF THE CAVITY. A THIRD ROCHON PRIMS IS POSITIONED IN THE THIRD PATH, THE THIRD PATH PRISM BEING CAPABLE OF PASSING RADIANT ENERGY OF THE OTHER POLARITY RETURNING ALONG THE THIRD PATH AND DIRECTING RADIANT ENERGY INTO ANOTHER PATH LEADING OUT OF THE CAVITY. A FIRST POCKELS CELL IS POSITIONED IN THE SECOND PATH FOR CHANGING THE POLARITY OF RADIATION RETURNING ALONG THE SECOND PATH TO DIRECT THE RADIATION INTO THE ONE PATH LEADING OUT OF THE CAVITY. A SECOND POCKELS CELL IS POSITIONED IN THE THIRD PATH FOR CHANGING THE POLARITY OF RADIATION RETURNING ALONG THE THIRD PATH TO DIRECT THE RADIATION INTO THE OTHER PATH LEADING OUT OF THE CAVITY. IN ONE VARIATION OF THE LASER THE FIRST AND SECOND ROCHON PRISMS ARE ELIMINATED AND THE REMAINING ROCHON PRISM POSITIONED IN THE CAVITY AT THE COMMON POINT SERVES TO DIRECT RADIATION OF ONE POLARITY RADIATING ALONG THE FIRST PATH INTO THE SECOND PATH AND RADIATION OF ANOTHER POLARITY INTO THE THIRD PATH, THE PRISM BEING CAPABLE OF DIRECTING RADIANT ENERGY OF ONE POLARITY RETURNING LONG THE SECOND PATH INTO THE FIRST PATH AND RADIANT ENERGY OF ANOTHER POLARITY INTO ONE OF THE PATHS LEADING OUT OF THE CAVITY, THE PRISM BEING CAPABLE OF DIRECTING RADIANT ENERGY OF ANOTHER POLARITY RETURNING ALONG THE THIRD INTO THE FIRST PATH AND RADIANT ENERGY OF ANOTHER POLARITY INTO ANOTHER PATH LEADING OUT OF THE CAVITY. IN STILL ANOTHER VARIATION, THE SECOND AND THIRD ROCHON PRISMS ALONG WITH THE POCKELS CELL OF THE THIRD PATH ARE ELIMINATED AND A QUARTER-WAVE IS PROVIDED IN THE FIRST PATH. IN THIS VARIATION A SINGLE OUTPUT IS OBTAINED ALONG ONE OF THE PATHS LEADING OUT OF THE CAVITY.
-
公开(公告)号：US3694769A
公开(公告)日：1972-09-26
申请号：US3694769D
申请日：1971-05-17
Applicant: TRW INC
Inventor： HOOK WILLIAM R , HILBERG RONALD P , DISHINGTON ROLAND H
CPC classification number: H01S3/115
Abstract: A high-power Q-switched laser is provided having a low loss. One common type of Q-switched laser conventionally includes an electro-optical element for altering the polarization of the light wave in the cavity of the laser. Preferably, the element is a Pockels cell. A voltage applied to the cell is changed suddenly to increase the Q of the cavity thereby to permit the laser to lase. It has been found that the crystal of the Pockels cell suffers a birefringent effect due to the mechanical strain caused by the applied voltage. This is counteracted by a compensating voltage applied to the cell so that the loss of the laser defined as the ratio of light power deflected out of the cavity to the light power approaching the light polarizer in the cavity becomes substantially zero at a time when the laser lases. The voltage which must be applied to a Pockels cell containing lithium niobate is positive while a negative voltage is required for a crystal of potassium dideuterium phosphate.
Abstract translation: 提供了具有低损耗的高功率Q开关激光器。 常规类型的Q开关激光器通常包括用于改变激光器腔中的光波的偏振的电光元件。 优选地，元件是普克尔斯（Pockels）电池。 施加到电池的电压突然改变以增加空腔的Q，从而允许激光器发光。 已经发现，由于施加的电压引起的机械应变，普克尔斯晶胞的晶体遭受双折射效应。 这被施加到电池的补偿电压抵消，使得被限定为在空腔中偏转的光功率与在腔中的光偏振器接近的光功率的比率的激光的损失在激光器的时间变得基本为零 灯笼 必须施加到含有铌酸锂的普克尔电池的电压是正的，而磷酸二氢钾的晶体需要负电压。
-
公开(公告)号：US3638025A
公开(公告)日：1972-01-25
申请号：US3638025D
申请日：1963-10-01
Applicant: TRW INC
Inventor： DISHINGTON ROLAND H , HOOK WILLIAM R
CPC classification number: G01S3/781
Abstract: 2. In an apparatus for determining the location, within a radiant energy field of view, of radiant energy emanative areas: MEANS FOR CREATING A TWO-DIMENSIONAL IMAGE OF SAID FIELD AT A REFERENCE PLANE; MEANS FOR MODULATING THE RADIATION INTENSITY AT FIRST AND SECOND ELEMENTAL PORTIONS OF SAID IMAGE IN ACCORDANCE WITH FIRST AND SECOND SUBSTANTIALLY RANDOM FUNCTIONS, RESPECTIVELY, SO THAT THE MODULATION WAVEFORM IMPOSED ON FIRST AND SECOND ELEMENTAL BUNDLES OF RAYS ARE DISTINCTIVELY INDICATIVE OF THE RESPECTIVE GEOMETRICAL COORDINATES OF THE DIFFERENT ELEMENTAL AREAS OF THE FIELD OF VIEW FROM WHICH SAID RAYS EMANATE; PHOTOSENSITIVE TRANSDUCER MEANS FOR GENERATING AN ELECTRICAL SIGNAL WHICH VARIES IN AMPLITUDE AS A FUNCTION OF THE TOTAL RADIANT POWER OF THE RADIATION PASSED BY SAID MODULATING MEANS; MEANS FOR PROVIDING FIRST AND SECOND REFERENCE SIGNALS RESPECTIVELY REPRESENTATIVE OF THE DIFFERENT SUBSTANTIALLY RANDOM MODULATIONS WHICH SAID MODULATING MEANS WOULD IMPOSE ON RAYS EMANATING FROM FIRST AND SECOND ELEMENTAL AREAS OF SAID FIELD OF VIEW; CORRELATION MEANS FOR SEPARATELY DERIVING THE PRODUCT OF SAID ELECTRICAL SIGNAL AND SAID FIRST REFERENCE SIGNAL AND THE PRODUCT OF SAID ELECTRICAL SIGNAL AND SAID SECOND REFERENCE SIGNAL; AND MEANS FOR SEPARATELY INTEGRATING SAID PRODUCTS OVER A TIME PERIOD WHICH IS AT LEAST AS LONG AS THE PERIOD OF THE LOWEST FREQUENCY COMPONENT GENERATED BY SAID MODULATING MEANS TO PRODUCE INFORMATION SIGNALS INDICATIVE OF THE PRESENCE AND ABSENCE OF HIGH-INTENSITY DISCONTINUITIES AT THE FIRST AND SECOND ELEMENTAL AREAS OF THE FIELD OF VIEW WHICH ARE REPRESENTED BY SAID FIRST AND SECOND REFERENCE SIGNALS.
Abstract translation: 在用于确定辐射能量范围内的辐射能发射区域的位置的装置中：
-
5.发明授权
公开(公告)号：US3527533A
公开(公告)日：1970-09-08
申请号：US3527533D
申请日：1964-08-25
Applicant: TRW INC
Inventor： HOOK WILLIAM R , DISHINGTON ROLAND H
CPC classification number: G01C11/025 , G03B9/08
-
-
-
-
Search Results
5
records
(took 0.111 seconds)
