High bandwidth vapor density diagnostic system
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsMichael A. Globig, Thomas W. Story
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Abstract
A high bandwidth vapor density diagnostic system for measuring the density of an atomic vapor during one or more photoionization events. The system translates the measurements from a low frequency region to a high frequency, relatively noise-free region in the spectrum to provide improved signal to noise ratio.
Claims14
A high bandwidth atomic vapor density diagnostic system comprising
- means for generating a high bandwidth laser beam,
- means for amplitude modulating said high bandwidth laser beam,
- means for propagating the modulated laser beam through an atomic vapor during one or more photoionization events,
- means for detecting the propagated laser beam to form a detected signal, and
- lock-in amplifier means for removing pickup noise from said detected signal.
A high bandwidth atomic vapor density diagnostic system comprising
- means for generating a high bandwidth laser beam,
- means for amplitude modulating said high bandwidth laser beam to form a sinusoidally modulated laser beam,
- means for propagating said sinusoidally modulated laser beam through an atomic vapor during one or more photoionization events,
- detector means for detecting the propagated signal,
- lock-in amplifier means for removing pickup noise from said detected signal,
- means for digitizing said detected signal, and
- means for measuring the vapor density variation of said atomic vapor over one or more of said photoionization events.
A high bandwidth atomic vapor density diagnostic system comprising
- means for propagating a low power amplitude modulated laser beam through an atomic vapor during one or more photoionization events, and
- means for measuring the vapor density variation of said atomic vapor over one or more of said photoionization events.
In a high bandwidth vapor density diagnostic system, the method comprising the steps of
- amplitude modulating a high bandwidth laser beam,
- propagating the modulated laser beam through an atomic vapor during one or more photoionization events,
- detecting the propagated laser beam, and
- removing pickup noise from the detected signal.
In a high bandwidth atomic vapor density diagnostic system, the method comprising the steps of
- generating a high bandwidth laser beam,
- amplitude modulating said high bandwidth laser beam to form a sinusoidally modulated high bandwidth laser beam,
- propagating said sinusoidally modulated laser beam through an atomic vapor during one or more photoionization events,
- detecting the propagated signal,
- removing pickup noise from said detected signal,
- digitizing said detected signal, and
- measuring the vapor density variation of said atomic vapor over one or more of said photoionization events.
In a high bandwidth atomic vapor density diagnostic system, the method comprising the steps of
- propagating a low power high bandwidth amplitude modulated laser beam through an atomic vapor during one or more photoionization events, and
- measuring the vapor density variation of said atomic vapor over one or more of said photoionization events.
Dependencies are inferred from the claim text.