Magnetically enhanced radiation source
AssigneeTeraView Limited
InventorsDonald Dominic Arnone, Craig Michael Ciesla
Life of this patent
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Abstract
A radiation source comprising a frequency conversion member (1) configured to emit a beam of emitted radiation (7) with at least one frequency in the range from 0.1 THz to 100 THz, in response to irradiation with an input beam (3) with a frequency different to that of the emitted radiation (7), the source being subjected to a magnetic field (9) which has a component parallel to that of the emitted beam of radiation (7). The radiation source may be optimised by using both the fluence of the input beam and the magnetic field or may comprise a magnetically doped frequency conversion member or also have means for applying an electric field.
Claims23
A radiation source comprising a frequency conversion member configured to emit a beam of emitted radiation in response to irradiation with an input beam with a frequency different to that of the emitted radiation, the source being subjected to a magnetic field wherein the free carrier concentration of the frequency conversion member and the applied magnetic field is configured such that the cyclotron diameter of the free carriers of the frequency conversion member is within 30% of their scattering length.
A radiation source comprising an irradiator, a magnetic field generator and a frequency conversion member configured to emit a beam of emitted radiation in response to irradiation by the irradiator with an input beam having a frequency different to that of the emitted beam of radiation, the conversion member being is subjected to a magnetic field, and the magnetic field and fluence of the input beam being configured to minimize the screening effect of free carriers in the frequency conversion member.
A radiation source comprising a frequency conversion member configured to emit a beam of emitted radiation in the range 0.1 THz to 100 THz in response to irradiation with an input beam with a frequency different to that of the emitted beam, the frequency conversion member comprises a magnetic material dopant.
A radiation source comprising a frequency conversion member configured to emit a beam of emitted radiation in response to being irradiated with an input beam with a frequency different to that of the emitted beam, the source being subjected to a magnetic field, the source further comprising means for applying an electric field at the surface of the frequency conversion member which is irradiated by the input beam.
A radiation source comprising a frequency conversion member configured to emit a beam of emitted radiation in response to irradiation with an input beam with a frequency different to that of the emitted radiation, the source being subjected to a magnetic field which has a component parallel to that of the emitted beam of radiation, the emitted beam of radiation being produced by reflecting the input beam off a surface of the frequency conversion member.
A method of optimizing a radiation source, the radiation source comprising a frequency conversion member configured to emit a beam of emitted radiation in response to irradiation with an input beam with a frequency different to that of the emitted radiation,
- the method comprising the step of applying a magnetic field to the source, the magnitude of the magnetic field being chosen in order to minimize the screening of the surface field of the frequency conversion member by free carriers in the frequency conversion member for a predetermined fluence of the input beam.
A method of optimizing a radiation source, the radiation source comprising a frequency conversion member configured to emit a beam of emitted radiation in response to irradiation with an input beam with a frequency different to that of the emitted radiation,
- the method comprising the step of applying a magnetic field to the source, the fluence of the input beam being chosen in order to minimize the screening of the surface field of the frequency conversion member by free carriers in the frequency conversion member for a predetermined magnitude of the applied magnetic field.
Dependencies are inferred from the claim text.