Welcome to CDC stacks | Analog time-reversed ultrasonically encoded light focusing inside scattering media with a 33,000× optical power gain - 32381 | CDC Public Access
Stacks Logo
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.
 
 
Help
Clear All Simple Search
Advanced Search
Analog time-reversed ultrasonically encoded light focusing inside scattering media with a 33,000× optical power gain
Filetype[PDF-739.46 KB]


Details:
  • Personal Authors:
  • Keywords:
  • Pubmed ID:
    25753905
  • Pubmed Central ID:
    PMC4354154
  • 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.

  • Document Type:
    Journal Article
  • Collection(s):
    CDC Public Access
  • Funding:
    DP1 EB016986/DP/NCCDPHP CDC HHS/United States
No Related Documents.
You May Also Like:
  1. Continuous scanning of a time-reversed ultrasonically encoded optical focus by reflection-mode digital phase conjugation
    Personal Author:
    Suzuki, Yuta; Tay, Jian Wei; Yang, Qiang; Wang, Lihong V.;
    Published:
    Jun 15 2014
    Source:
    Opt Lett. 39(12):3441-3444.
    Description:
    Time-reversed ultrasonically encoded (TRUE) optical focusing in turbid media was previously implemented using both analog and digital phase conjugation. The digital approach, in addition to its large energy gain, can improve the focal intensity and r...
    File Type:
    Filetype[PDF - 803.57 KB]
  2. Optical focusing deep inside dynamic scattering media with near-infrared time-reversed ultrasonically encoded (TRUE) light
    Personal Author:
    Liu, Yan; Lai, Puxiang; Ma, Cheng; Xu, Xiao; Grabar, Alexander A.; Wang, Lihong V.;
    Published:
    Jan 05 2015
    Source:
    Nat Commun. 2015; 6:5904.
    Description:
    Focusing light deep inside living tissue has not been achieved despite its promise to play a central role in biomedical imaging, optical manipulation and therapy. To address this challenge, internal-guide-star-based wavefront engineering techniques--...
    File Type:
    Filetype[PDF - 1.13 MB]
  3. Focusing light through scattering media by full-polarization digital optical phase conjugation
    Personal Author:
    Shen, Yuecheng; Liu, Yan; Ma, Cheng; Wang, Lihong V.;
    Published:
    Mar 15 2016
    Source:
    Opt Lett. 41(6):1130-1133.
    Description:
    Digital optical phase conjugation (DOPC) is an emerging technique for focusing light through or within scattering media such as biological tissue. Since DOPC systems are based on time reversal, they benefit from collecting as much information about t...
    File Type:
    Filetype[PDF - 1.34 MB]
  4. Ultrasonically encoded wavefront shaping for focusing into random media
    Personal Author:
    Tay, Jian Wei; Lai, Puxiang; Suzuki, Yuta; Wang, Lihong V.;
    Published:
    Jan 29 2014
    Source:
    Sci Rep. 2014; 4.
    Description:
    Phase distortions due to scattering in random media restrict optical focusing beyond one transport mean free path. However, scattering can be compensated for by applying a correction to the illumination wavefront using spatial light modulators. One m...
    File Type:
    Filetype[PDF - 589.39 KB]
  5. High-sensitivity ultrasound-modulated optical tomography with a photorefractive polymer
    Personal Author:
    Suzuki, Yuta; Lai, Puxiang; Xu, Xiao; Wang, Lihong;
    Published:
    Mar 15 2013
    Source:
    Opt Lett. 2012; 38(6):899-901.
    Description:
    By detecting ultrasonically tagged diffuse light, ultrasound-modulated optical tomography images optical contrast with ultrasonic resolution deep in turbid media, such as biological tissue. However, small detection etendues and weak tagged light subm...
    File Type:
    Filetype[PDF - 530.75 KB]