公开(公告)号：CA2715157A1

公开(公告)日：2009-08-20

申请号：CA2715157

申请日：2008-02-15

Applicant: STFC SCIENCE & TECHNOLOGY

Inventor： WEIDMANN DAMIEN

IPC: G01J3/42 ,  G01J3/08 ,  G01N21/27 ,  G01N21/35 ,  G01N21/39

Abstract: Method and apparatus for detecting, by absorption spectroscopy, an isotopic ratio of a sample, by passing first and second laser beams of different frequencies through the sample. Two IR absorption cells are used, a first containing a reference gas of known isotopic ratio and the second containing a sample of unknown isotopic ratio. An interlacer or reflective chopper may be used so that as the laser frequencies are scanned the absorption of the sample cell and the reference cell are detected alternately. This ensures that the apparatus is continuously calibrated and rejects the baseline noise when phase sensitive detection is used.

公开(公告)号：GB2447497A

公开(公告)日：2008-09-17

申请号：GB0705031

申请日：2007-03-15

Applicant: COUNCIL CENT LAB RES COUNCILS ,  STFC SCIENCE & TECHNOLOGY

Inventor： MATOUSEK PAVEL

IPC: G02B5/26 ,  G01J3/44 ,  G01N21/65

Abstract: The invention provides a technique for increasing the illumination intensity of probe light in a diffusely scattering sample 10 without increasing the power of the probe beam. Generally, an optical filter 30 is used which permits a collimated probe beam of light 14 to pass through to the sample, but which reflects back towards the sample much of the backscattered scattered probe light emerging at a wider range of angles. In particular embodiments a collimated laser beam is delivered to the sample through a multilayer dielectric filter covering a portion of the sample. The filter is transmissive to the laser light at normal incidence, but reflective at shallower angles of incidence characteristic of the backscattered light.

公开(公告)号：GB0721607D0

公开(公告)日：2007-12-12

申请号：GB0721607

申请日：2007-11-02

Applicant: STFC SCIENCE & TECHNOLOGY

公开(公告)号：GB0706422D0

公开(公告)日：2007-05-09

申请号：GB0706422

申请日：2007-04-02

Applicant: STFC SCIENCE & TECHNOLOGY

Abstract: A combined power and communication system, a transmitter, a receiver, and a method of communicating data over a power line are provided. A power supply is arranged to supply an output current to a power line and comprises a current source. The current source is arranged to supply a DC component to the output current and the power supply is further arranged to mod the output current according to a data signal. A load interface is arranged to receive a load at load terminals, to provide DC power from the power line to the load terminals, and to demodulate the current received from the power line to receive the data signal.

公开(公告)号：GB201519758D0

公开(公告)日：2015-12-23

申请号：GB201519758

申请日：2015-11-09

Applicant: STFC SCIENCE & TECHNOLOGY

Abstract: Methods and apparatus for inspecting nuclear waste, for example drums of intermediate level nuclear waste, are disclosed. In particular, a single laser pulse may be directed at a pitcher-catcher laser target structure, with subsequent separate detection of the generated X-rays and neutrons.

公开(公告)号：GB2512521A

公开(公告)日：2014-10-01

申请号：GB201410963

申请日：2012-12-21

Applicant: STFC SCIENCE & TECHNOLOGY

Inventor： MASON PAUL ,  BANERJEE SAUMYABRATA ,  HILL JOHN ,  LINTERN ANDREW

IPC: H01S3/08 ,  H01S3/04 ,  H01S3/042

Abstract: A mounting arrangement for an optical element, such as gain medium, for a laser, optical amplifier or other optical systems is disclosed. The mounting arrangement is applied to a vane assembly for cooling by a gas or liquid stream. The vane assembly comprises: an optical element (162); a vane plate (160) having an aperture, the optical element mounted in the aperture; and a retainer (170) arranged to fit between the optical element and the vane plate to provide a compressive force at the edge of the optical element to hold the optical element in the aperture. The retainer may be a resilient element or spring element. The retainer may be held in position using retaining rings. The optical element may be a Nd:YAG laser disc cooled by circulating He gas and the edge of the laser disc may be electrically heated to decrease the temperature gradient within the pumped laser disc. Reduction of thermally induced aberrations within high power lasers.

公开(公告)号：GB2510372A

公开(公告)日：2014-08-06

申请号：GB201301750

申请日：2013-01-31

Applicant: STFC SCIENCE & TECHNOLOGY

Inventor： TURCHETTA RENATO ANDREA DANILO ,  GUERRINI NICOLA CARLO ,  GASIOREK PRZEMYSLAW

IPC: H01L27/146 ,  H04N5/369 ,  H04N5/378

Abstract: A sensor array comprising an array of pixels and a method of operating the same are disclosed. Each pixel of the sensor array comprises: a photodiode; a node arranged to develop a voltage based on charge accumulated at the photodiode due to photogeneration; and a first overflow unit 200 coupled to the node. The first overflow unit comprises a transistor and a capacitance. The sensor array is arranged to control the first overflow unit to accept overflow charge from the node into the capacitance of that overflow unit, and to subsequently read the overflow charge stored at the capacitance. Each pixel may comprise one or more further overflow units in series with the first overflow unit. The overflow units provide the sensor array with enhanced dynamic range. Also disclosed is a single pixel sensor with enhanced dynamic range. This arrangement results in a sensor array in which each pixel may have multiple capacitors. The arrangement also has readout circuitry 100 which can read the charge held by both the photodiode and overflow unit.

公开(公告)号：GB201410593D0

公开(公告)日：2014-07-30

申请号：GB201410593

申请日：2014-06-13

Applicant: STFC SCIENCE & TECHNOLOGY

Abstract: A method of reducing the photoelectron yield (PEY) and/or the secondary electron yield (SEY) of at least part of an apparatus, the method comprising the steps of providing an apparatus, and ablating material from a metal surface of the apparatus using a pulsed laser to produce an array of periodic structures in the metal surface and thereby reducing the PEY and/or SEY of the metal surface. The apparatus is shown to be a vacuum chamber, a particle accelerator, a radio frequency waveguide, a detector and a spacecraft. Also shown is a method performed in the presence of a reactive gas such that the metal surface is caused to react with the reactive gas.

公开(公告)号：DE212012000230U1

公开(公告)日：2014-07-25

申请号：DE212012000230

申请日：2012-12-21

Applicant: STFC SCIENCE & TECHNOLOGY

IPC: H01S3/08 ,  H01S3/04 ,  H01S3/042 ,  H01S3/07 ,  H01S3/102 ,  H01S3/16

Abstract: Flügelanordnung, umfassend: ein optisches Element (162) eines Lasers oder optischen Verstärkers, wobei das optische Element (162) von einem Fluidstrom gekühlt wird; eine Flügelplatte (160), welche eine Öffnung (160a) aufweist, wobei das optische Element (162) in der Öffnung (160a) befestigt ist; und einen Halter (170), welcher dazu eingerichtet ist, zwischen das optische Element (162) und die Flügelplatte (160) zu passen, um eine Druckkraft an dem Rand (162a) des optischen Elements (162) bereitzustellen, um das optische Element (162) in der Öffnung (160a) zu halten.

公开(公告)号：GB201300190D0

公开(公告)日：2013-02-20

申请号：GB201300190

申请日：2013-01-07

Applicant: STFC SCIENCE & TECHNOLOGY