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    Tunable infra red/ultraviolet laser
    2.
    发明授权
    Tunable infra red/ultraviolet laser 失效
    可调红外/紫外线激光

    公开(公告)号：US3892979A

    公开(公告)日：1975-07-01

    申请号：US45814474

    申请日：1974-04-05

    Applicant: IBM

    Inventor： HODGSON RODNEY T ,  LANKARD JOHN R ,  SOROKIN PETER P ,  WYNNE JAMES J

    IPC: H01S3/30 ,  H02M5/04

    CPC classification number: H01S3/305

    Abstract: An infrared source producing a coherent output having a spectrally narrow and continuously tunable frequency is described. Such a source uses a four wave mixing process in an alkali metal vapor, wherein the initial input beams to the alkali metal vapor come from two dye lasers. In an alternative mode of operation, tunable ultraviolet output is obtained.

    Abstract translation: 描述了产生具有频谱窄且连续可调频率的相干输出的红外源。 这种源在碱金属蒸气中使用四波混合过程，其中对碱金属蒸气的初始输入光束来自两个染料激光器。 在另一种操作模式下，可获得可调谐的紫外线输出。

    APPARATUS FOR PRODUCING TUNABLE INTENSE COHERENT RADIATION IN THE VICINITY OF 628 CM.-1
    3.
    发明专利
    APPARATUS FOR PRODUCING TUNABLE INTENSE COHERENT RADIATION IN THE VICINITY OF 628 CM.-1 未知

    公开(公告)号：CA1084151A

    公开(公告)日：1980-08-19

    申请号：CA277470

    申请日：1977-05-03

    Applicant: IBM

    Inventor： GRISCHKOWSKY DANIEL R ,  HODGSON RODNEY T ,  SOROKIN PETER P

    IPC: H01S3/30 ,  G02F1/35 ,  H01S3/09 ,  H01S3/10

    Abstract: APPARATUS FOR PRODUCING TUNABLE INTENSE COHERENT RADIATION IN THE VICINITY OF 628 CM. -1 Apparatus for producing tunable intense coherent radiation at approximately 628 cm.-1 with a line width less than 0.1 cm.-1. The apparatus includes an optical cavity containing a vapor cell and pumping means including at least one optical pumping source for directing energy at the cavity. In one embodiment the cavity encloses a material capable of stimulated emission in response to said pumping. The material has at least three atomic energy level with at least a first and second atomic energy level separated by a particular energy quantum approximately equal to 628 cm-1; a transition from said first to said second atomic energy level favored over all other possible transitions from said first atomic energy level; said third atomic energy level, from which atoms can be pumped to said fist atomic energy level in response to said pumping means. While this is consistent with classical laser operation the apparatus disclosed herein can also be used for stimulated Raman scattering. Tunability is achieved by tuning the pumping sources in the case of stimulated Raman scattering, or with the aid of the Zeeman or Stark effects for classical laser operation. Typical materials are potassium or strontium vapors. Several pumping arrangements are also disclosed.

    4.
    发明专利
    未知

    公开(公告)号：DE69024468D1

    公开(公告)日：1996-02-08

    申请号：DE69024468

    申请日：1990-10-18

    Applicant: IBM

    Inventor： HODGSON RODNEY T ,  LEGOUES FRANCOISE K ,  WELLS OLIVER C

    IPC: H01J37/20 ,  H01J37/14 ,  H01J37/244 ,  H01J37/256 ,  H01J37/28 ,  H01J37/252

    Abstract: An electron microscope which includes a detector (18) which is located in the magnetic field used to focus the primary electron beam onto the sample (10). The focussing magnetic field is used to energy-filter and/or energy analyze the scattered electrons without the need for additional equipment, such as a retarding-field energy filter. The magnetic field of the condenser-objective lens (or of any other type of magnetic lens) of the microscope provides the filtering and/or analyzing action, and the detector (18) can be located so as to collect only low-loss electrons.

    OPTICAL ENERGY CONVERSION
    5.
    发明专利
    OPTICAL ENERGY CONVERSION 未知

    公开(公告)号：CA1136745A

    公开(公告)日：1982-11-30

    申请号：CA339638

    申请日：1979-11-13

    Applicant: IBM

    Inventor： HODGSON RODNEY T ,  HOVEL HAROLD J ,  WOODALL JERRY M

    IPC: H01L31/04 ,  H01L31/055 ,  H01L31/02

    Abstract: OPTICAL ENERGY CONVERSION Enhanced efficiency can be achieved in the construction of semiconductor optical energy conversion devices such as solar cells by providing a translucent frequency shifting supporting member with appropriate doping such as Al2O3:Cr+3 (Ruby) that is capable of shifting the wavelength of incident light energy in the direction of greatest efficiency of the semiconductor device. The efficiency can be further enhanced by providing a crystal perfection accommodation region between the active region of the device and the light frequency shifting substrate. YO978-016

    7.
    发明专利
    未知

    公开(公告)号：DE69024468T2

    公开(公告)日：1996-07-11

    申请号：DE69024468

    申请日：1990-10-18

    Applicant: IBM

    Inventor： HODGSON RODNEY T ,  LEGOUES FRANCOISE K ,  WELLS OLIVER C

    IPC: H01J37/20 ,  H01J37/14 ,  H01J37/244 ,  H01J37/256 ,  H01J37/28 ,  H01J37/252

    Abstract: An electron microscope which includes a detector (18) which is located in the magnetic field used to focus the primary electron beam onto the sample (10). The focussing magnetic field is used to energy-filter and/or energy analyze the scattered electrons without the need for additional equipment, such as a retarding-field energy filter. The magnetic field of the condenser-objective lens (or of any other type of magnetic lens) of the microscope provides the filtering and/or analyzing action, and the detector (18) can be located so as to collect only low-loss electrons.

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