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公开(公告)号：GB2137357B
公开(公告)日：1987-01-14
申请号：GB8405311
申请日：1984-02-29
Applicant: LITTON SYSTEMS INC
Inventor： LAM LEO K , PHILLIPS EDWARD
Abstract: A method and apparatus for optical pumping of an NMR cell by means of laser light. A current driver provides an a.c. current waveform as injection current to a laser diode. The resulting laser intensity spectrum closely approximates the absorption spectrum of the cell to thereby increase the signal generated for a given power input.
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2.发明专利
公开(公告)号：CA2050538C
公开(公告)日：1996-08-06
申请号：CA2050538
申请日：1991-09-03
Applicant: LITTON SYSTEMS INC
Inventor： PHILLIPS EDWARD , HUANG SIDNEY X Y
IPC: G01C19/72 , G01P9/00 , G02B6/34 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/083 , H01S3/094 , G02B5/22
Abstract: A length of an absorbing optical fiber is connected to receive light output from an optically pumped light source. The light source includes a gain fiber that is doped with erbium. Pumping the erbium with a pump wavelength of 980 nm causes the erbium to emit light having a wavelength of 1550 nm. Ytterbium ions in the absorbing fiber attenuate light having the pump wavelength without affecting the intensity of the 1550 nm light output from the erbium in the gain fiber.
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公开(公告)号：GB2252841B
公开(公告)日：1994-06-29
申请号：GB9118655
申请日：1991-08-30
Applicant: LITTON SYSTEMS INC
Inventor： PHILLIPS EDWARD , HUANG SIDNEY X Y
IPC: G01C19/72 , G01P9/00 , G02B6/34 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/083 , H01S3/094 , G02B6/24 , H04B10/16
Abstract: A length of an absorbing optical fiber is connected to receive light output from an optically pumped light source. The light source includes a gain fiber that is doped with erbium. Pumping the erbium with a pump wavelength of 980 nm causes the erbium to emit light having a wavelength of 1550 nm. Ytterbium ions in the absorbing fiber attenuate light having the pump wavelength without affecting the intensity of the 1550 nm light output from the erbium in the gain fiber.
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公开(公告)号：DE4203599A1
公开(公告)日：1992-08-13
申请号：DE4203599
申请日：1992-02-07
Applicant: LITTON SYSTEMS INC
Inventor： PHILLIPS EDWARD , HUANG SIDNEY X Y
IPC: G01C19/72 , G01P9/00 , G02B6/34 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/083 , H01S3/094
Abstract: A length of an absorbing optical fiber is connected to receive light output from an optically pumped light source. The light source includes a gain fiber that is doped with erbium. Pumping the erbium with a pump wavelength of 980 nm causes the erbium to emit light having a wavelength of 1550 nm. Ytterbium ions in the absorbing fiber attenuate light having the pump wavelength without affecting the intensity of the 1550 nm light output from the erbium in the gain fiber.
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公开(公告)号：CA1212992A
公开(公告)日：1986-10-21
申请号：CA447971
申请日：1984-02-21
Applicant: LITTON SYSTEMS INC
Inventor： LAM LEO K , PHILLIPS EDWARD
Abstract: A method and apparatus for optical pumping of an NMR cell by means of laser light. A current driver provides an a.c. current waveform as injection current to a laser diode. The resulting laser intensity spectrum closely approximates the absorption spectrum of the cell to thereby increase the signal generated for a given power input.
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Patent Agency Ranking
公开(公告)号：GB2252841A
公开(公告)日：1992-08-19
申请号：GB9118655
申请日：1991-08-30
Applicant: LITTON SYSTEMS INC
Inventor： PHILLIPS EDWARD , HUANG SIDNEY X Y
IPC: G01C19/72 , G01P9/00 , G02B6/34 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/083 , H01S3/094 , G02B6/24 , H04B10/16
Abstract: A length of an absorbing optical fiber 20 is connected to receive light output from an optically pumped light source 10. The light source includes a gain fiber 12 that may be doped with erbium. Pumping the erbium with a pump wavelength of 980 nm causes the erbium to emit light having a wavelength of 1550 nm. Ytterbium ions in the absorbing fiber 20 attenuate light having the pump wavelength without affecting the intensity of the 1550 nm light output from the erbium in the gain fiber. This may be used in a fibre optic rotation sensor 23.
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公开(公告)号：GB2137357A
公开(公告)日：1984-10-03
申请号：GB8405311
申请日：1984-02-29
Applicant: LITTON SYSTEMS INC
Inventor： LAM LEO K , PHILLIPS EDWARD
Abstract: A method and apparatus for optical pumping of an NMR cell by means of laser light. A current driver provides an a.c. current waveform as injection current to a laser diode. The resulting laser intensity spectrum closely approximates the absorption spectrum of the cell to thereby increase the signal generated for a given power input.
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公开(公告)号：ITTO910715A1
公开(公告)日：1993-03-20
申请号：ITTO910715
申请日：1991-09-20
Applicant: LITTON SYSTEMS INC
Inventor： HUANG SIDNEY X Y , PHILLIPS EDWARD
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公开(公告)号：ITTO910715D0
公开(公告)日：1991-09-20
申请号：ITTO910715
申请日：1991-09-20
Applicant: LITTON SYSTEMS INC
Inventor： PHILLIPS EDWARD , HUANG SIDNEY X Y
IPC: G01C19/72 , G01P9/00 , G02B6/34 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/07 , H01S3/083 , H01S3/094
Abstract: A length of an absorbing optical fiber is connected to receive light output from an optically pumped light source. The light source includes a gain fiber that is doped with erbium. Pumping the erbium with a pump wavelength of 980 nm causes the erbium to emit light having a wavelength of 1550 nm. Ytterbium ions in the absorbing fiber attenuate light having the pump wavelength without affecting the intensity of the 1550 nm light output from the erbium in the gain fiber.
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公开(公告)号：FR2543747A1
公开(公告)日：1984-10-05
申请号：FR8404910
申请日：1984-03-29
Applicant: LITTON SYSTEMS INC
Inventor： LAM LEO K , PHILLIPS EDWARD
Abstract: A method and apparatus for optical pumping of an NMR cell by means of laser light. A current driver provides an a.c. current waveform as injection current to a laser diode. The resulting laser intensity spectrum closely approximates the absorption spectrum of the cell to thereby increase the signal generated for a given power input.
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