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US 6,583,397 B2Granted
SERODS optical data storage with parallel signal transfer
AssigneeUT-Battelle, LLC
InventorTuan Vo-Dinh
Life of this patent
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Abstract
Surface-enhanced Raman optical data storage (SERODS) systems having increased reading and writing speeds, that is, increased data transfer rates, are disclosed. In the various SERODS read and write systems, the surface-enhanced Raman scattering (SERS) data is written and read using a two-dimensional process called parallel signal transfer (PST). The various embodiments utilize laser light beam excitation of the SERODS medium, optical filtering, beam imaging, and two-dimensional light detection. Two- and three-dimensional SERODS media are utilized. The SERODS write systems employ either a different laser or a different level of laser power.
Claims109
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing an optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a two-dimensional detector receiving the 2-D SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image of the 2-D SERS optical light image signal;
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal;
- and
- imaging optics positioned at the entrance to said two-dimensional detector, said imaging optics adapted to focus the two-dimensional SERS optical light image signal onto said two-dimensional detector.
2 more elements
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a microreader system adapted for placement of the SERODS medium therein;
- a laser providing an optical light beam to the SERODS medium in said microreader system, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a combined spatial filter and beam expansion module positioned between said laser and said microreader system, said combined spatial filter and beam expansion module adapted to expand and re-collimate the optical light beam from said laser;
- a two-dimensional detector receiving the 2-D SERS optical light image signal from said microreader system, said two-dimensional detector adapted for producing a 2-D image of the 2-D SERS optical light image signal;
- an optical lens system positioned between said microreader system and said 2-D detector for projecting the 2-D SERS optical light image signal onto said 2-D detector;
- and
- a holographic notch filter positioned between said optical lens system and said 2-D detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal.
4 more elements
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing an optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a beam shaping lens system positioned in said optical light beam, said beam shaping lens system adapted to produce evanescent wave excitation in the SERODS medium;
- a two-dimensional detector receiving the 2-D SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image the 2-D SERS optical light image signal;
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal;
- and
- imaging optics positioned at the entrance to said two-dimensional detector, said imaging optics adapted to focus the two-dimensional SERS optical light image signal onto said two-dimensional detector.
3 more elements
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing an optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a beam shaping lens system positioned in the optical light beam, said beam shaping lens system adapted to produce evanescent wave excitation in the SERODS medium;
- a two-dimensional detector receiving the 2-D SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image the 2-D SERS optical light image signal;
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal;
- imaging optics positioned at the entrance to said two-dimensional detector, said imaging optics adapted to focus the two-dimensional SERS optical light image signal onto said two-dimensional detector;
- a second laser providing a second optical light beam to the SERODS medium, said second laser adapted to produce a second two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- and
- a second beam shaping lens system positioned in the second optical light beam, said second beam shaping lens system adapted to produce evanescent wave excitation in the SERODS medium.
5 more elements
A parallel signal transfer system (PSTS) for reading a three dimensional surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing multiple optical light beams to the SERODS medium, said laser adapted to produce multiple two-dimensional surface-enhanced Raman scattering (SERS) optical light image signals from the SERODS medium;
- diffraction optics positioned in the optical light beam, said diffraction optics adapted to produce multiple optical light beams that produce multiple evanescent wave excitations in the SERODS medium from edge illumination of the SERODS medium;
- and
- a two-dimensional detector receiving the multiple 2-D SERS optical light image signals, said 2-D detector having multiple wavelength sensing elements, each sensing element comprising a plurality of microsensors adapted for detecting at a specific wavelength, said 2-D detector adapted for processing the signals from said plurality of microsensors to produce multiple 2-D images of the 2-D SERS optical light image signals.
1 more element
A parallel signal transfer system (PSTS) for reading a three dimensional surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing multiple optical light beams to the SERODS medium, said laser adapted to produce multiple two-dimensional surface-enhanced Raman scattering (SERS) optical light image signals from the SERODS medium;
- diffraction optics positioned in the optical light beam, said diffraction optics adapted to produce multiple optical light beams that produce multiple evanescent wave excitations in the SERODS medium from face illumination of the SERODS medium;
- and
- a two-dimensional detector receiving the multiple 2-D SERS optical light image signals, said 2-D detector having multiple wavelength sensing elements, each sensing element comprising a plurality of microsensors adapted for detecting at a specific wavelength, said 2-D detector adapted for processing the signals from said plurality of microsensors to produce multiple 2-D images of the 2-D SERS optical light image signals.
1 more element
A parallel signal transfer system (PSTS) for reading a three dimensional surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing multiple optical light beams to the SERODS medium, said laser adapted to produce multiple two-dimensional surface-enhanced Raman scattering (SERS) optical light image signals from the SERODS medium;
- diffraction optics positioned in the optical light beam, said diffraction optics adapted to produce multiple optical light beams that produce multiple evanescent wave excitations in the SERODS medium from edge illumination of the SERODS medium;
- and
- a two-dimensional detector receiving the multiple 2-D SERS optical light image signals, said 2-D detector having multiple sections of sensing elements, each section having wavelength selective elements for detecting at a specific wavelength, said 2-D detector adapted for processing the signals from said detection sections to produce multiple 2-D images of the 2-D SERS optical light image signals.
1 more element
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a pulsed laser providing optical light pulses to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a beam splitter for splitting the optical light pulses into first and second pulsed beams;
- a cylindrical mirror system positioned in the first pulsed beam path, said cylindrical mirror system adapted for spreading the first pulsed beam into a 2-D excitation plane;
- an optical delay positioned in the second pulsed beam path, said optical delay adapted for producing pulse overlap with the first pulsed beam for two-photon excitation in the SERODS medium;
- a two-dimensional detector receiving the two-dimensional SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image of the 2-D SERS optical light image signal;
- and
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal.
4 more elements
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a first pulsed laser providing a first pulsed optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a cylindrical mirror system positioned in the first pulsed optical light beam path, said cylindrical mirror system adapted for spreading the first pulsed beam into a 2-D excitation plane;
- a second pulsed laser providing a second pulsed optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- an optical delay positioned in the second pulsed beam path, said optical delay adapted for producing pulse overlap with the first pulsed beam for two-photon excitation in the SERODS medium;
- a two-dimensional detector receiving the two-dimensional SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image of the 2-D SERS optical light image signal;
- and
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal.
4 more elements
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing an optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a beam splitter for splitting the optical light beam into first and second optical light beams;
- a cylindrical mirror system positioned in the first optical light beam path, said cylindrical mirror system adapted for spreading the first optical light beam into a 2-D excitation plane;
- an acousto-optic modulator positioned in the second optical light beam path, said acousto-optic modulator adapted for deflecting the second optical light beam;
- an optical delay positioned in the second optical light beam path, said optical delay adapted for producing overlap with the first optical light beam for two-photon excitation in the SERODS medium;
- a two-dimensional detector receiving the two-dimensional SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image of the 2-D SERS optical light image signal;
- and
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal.
5 more elements
A parallel signal transfer system (PSTS) for reading a surface-enhanced Raman optical data storage (SERODS) medium comprising:
- a laser providing a first optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- a cylindrical mirror system positioned in the first optical light beam path, said cylindrical mirror system adapted for spreading the first optical light beam into a 2-D excitation plane;
- a second laser providing a second optical light beam to the SERODS medium, said laser adapted to produce a two-dimensional surface-enhanced Raman scattering (SERS) optical light image signal from the SERODS medium;
- an acousto-optic modulator positioned in the second optical light beam path, said acousto-optic modulator adapted for deflecting the second optical light beam;
- an optical delay positioned in the second optical light beam path, said optical delay adapted for producing overlap with the first optical light beam for two-photon excitation in the SERODS medium;
- a two-dimensional detector receiving the two-dimensional SERS optical light image signal, said two-dimensional detector adapted for producing a 2-D image of the 2-D SERS optical light image signal;
- and
- a holographic notch filter positioned between the SERODS medium and said two-dimensional detector, said holographic notch filter rejecting the Raleigh scatter from the two-dimensional SERS optical light image signal.
5 more elements
Dependencies are inferred from the claim text.