Analog time-reversed ultrasonically encoded light focusing inside scattering media with a 33,000× optical power gain
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Help
Clear All

Add terms to the query box

Query box

Help
Clear All
i

Analog time-reversed ultrasonically encoded light focusing inside scattering media with a 33,000× optical power gain

Filetype[PDF-739.46 KB]



Details:

  • Alternative Title:
    Sci Rep
  • Description:
    Recent breakthrough in wavefront engineering shows great promises in controlling light propagation inside scattering media. At present, the digital approaches enjoy high gain, while their speeds are slow because of high data throughputs. In contrast, the analog approaches are intrinsically fast but suffer from poor efficiencies and small gains. Further improvements in both speed and gain are necessary to advance the existing technologies toward real-world applications. Here, we report analog time-reversal of acousto-optically tagged photons with a flux amplification of over 33,000 times (45 dB) at a target location inside scattering media. Such a substantial power gain enhancement is achieved when the temporal width of the time-reversed photon packet is squeezed below the carrier-recombination-limited hologram decay time in a photorefractive crystal. Despite a focusing energy gain below unity, the unprecedented power gain is expected to enable new optical imaging, sensing, manipulation and treatment applications.
  • Subject:
  • Pubmed ID:
    25753905
  • Pubmed Central ID:
    PMC4354154
  • Document Type:
  • Collection(s):
  • Main Document Checksum:
  • File Type:

You May Also Like

Checkout today's featured content at stacks.cdc.gov