Zonal lenslet array
AssigneeUnited States of America AS Represented By the Dept of the Army
InventorJerome Franck
Life of this patent
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Abstract
The invention includes a master lens, which initially focuses a laser pulse, and then the pulse passes through a zonal lenslet array, which uses different lenslet elements that provide for predetermined focal lengths so as to establish a three or two dimensional, predetermined dispersion of foci of the laser pulse. The zonal lenslet array of the present invention may be thought of as a variant of a Shack-Hartman wave front sensor, but used for an entirely different application.
Claims23
A laser pulse shaping device comprising:
- a laser source producing a laser pulse;
- and
- a zonal lenslet array, which is comprised of different lenslet elements that provide for different focal lengths so as to establish individually predetermined focal lengths of the laser pulse.
A laser pulse shaping device useful for shaping a laser input signal into stimulated Brillouin scattering (SBS) cell compromising:
- a first lens which initially focuses an input laser pulse;
- a means through which to pass the focused input laser pulse;
- a master lens which refocuses the focused input laser pulse;
- and
- a zonal lenslet array, which is comprised of different lenslets that provide for different focal lengths so as to establish individually predetermined focal lengths as the input laser signal is focused into the SBS cell.
A method to focus a laser input signal through a matched filter cell into stimulated Brillouin scattering (SBS) cell compromising the steps of:
- providing for a master lens which initially focuses an input laser pulse;
- and
- providing for a zonal lenslet array, which is comprised of different lenslet elements that provide for different focal lengths so as to establish individually predetermined focal lengths as the input laser signal is focused into the SBS cell.
A method to focus a laser input signal through a matched filter cell into stimulated Brillouin scattering (SBS) cell compromising the steps of:
- providing for a first lens to focus an input laser pulse;
- providing a means through to pass the focused input laser pulse;
- providing for a master lens to refocuses the focused input laser pulse;
- and
- providing for a zonal lenslet array, which is comprised of different lenslet elements that provide for different focal lengths so as to establish individually predetermined focal lengths as the input laser signal is focused into the SBS cell.
Dependencies are inferred from the claim text.