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Ying-Chih Chen

TitleProfessor of Physics
InstitutionHunter College, CUNY
DepartmentPhysics and Astronomy
AddressRoom 1225 HN, Hunter College, CUNY
New York Ne 10065
Phone(212) 772-4526
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    Collapse Overview 
    Collapse overview
    My research has been focused in laser devices and biomedical-related optical physics and technology, such as photoacoustic imaging, microwave-induced thermoelastic imaging, imaging and focusing of light through optically diffusive media ( tissues, multimode fibers, etc.) . Recent research highlights are shown below.

    High-resolution photoacoustic imaging of ocular tissues
    Using focused laser beam to generate ultrasound with pinpoint precision, we have achieved 20-fold improvement in the resolution of photoacoustic images compared to conventional ultrasound images.
    Potential applications of this technique include clinical examination of superficial and thin tissues containing optically absorbing pigments such as melanin or hemoglobin, including skin, mucosa, and ocular tissues (iris, retina and choroid).

    Focusing through optically diffusive media
    We have demonstrated that laser beam can be focused through diffusive media such as a ground glass or biological tissue onto a light absorber by shaping the wavefront.

    Delivery of a focused laser beam through a multimode fiber
    Multimode fibers are a closed system of diffuse reflectors. The interference among the fiber modes creates a random granular pattern, known as speckle, at the output and causes a total loss of spatial coherence. We have demonstrated that the coherence of the beam transmitted through multimode fibers can be restored by wavefront shaping. This can be done at the input or output ends. Potential applications include delivery of a focused laser beam through an endoscope for laser surgery.



    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
    Newest   |   Oldest   |   Most Cited   |   Most Discussed   |   Timeline   |   Field Summary   |   Plain Text
    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Tianjie Chen, Shaoguang Duan, and Y.C. Chen. J. Opt. Soc. Am, B. Electrodynamics analysis on coherent perfect absorber and phase-controlled optical switch. 2012; 29:689-693.
    2. Kong F, Silverman RH, Liu L, Chitnis PV, Lee KK, Chen YC. Photoacoustic-guided convergence of light through optically diffusive media. Opt Lett. 2011 Jun 01; 36(11):2053-5. PMID: 21633446.
      Citations: 27     Fields:    
    3. Fanting Kong, Ronald Silverman, Liping Liu, Parag Chitnis, and Y.C. Chen. Proceedings of the SPIE. Focusing of light through scattering media. 2011; 7899:789925.
    4. Silverman RH, Kong F, Chen YC, Lloyd HO, Kim HH, Cannata JM, Shung KK, Coleman DJ. High-resolution photoacoustic imaging of ocular tissues. Ultrasound Med Biol. 2010 May; 36(5):733-42. PMID: 20420969.
      Citations: 45     Fields:    Translation:Animals
    5. Ronald H. Silverman, Fanting Kong, Harriet O. Lloyd,Y. C. Chen. Proceedings of the SPIE. Fine-resolution photoacoustic imaging of the eye. 2010; 7564:75640Y.
    6. Kong F, Chen YC, Lloyd HO, Silverman RH, Kim HH, Cannata JM, Shung KK. High-resolution photoacoustic imaging with focused laser and ultrasonic beams. Appl Phys Lett. 2009 Jan 19; 94(3):33902. PMID: 19529786.
      Citations:    
    7. Fanting Kong, Lipoing Liu, Yi Zhou, Shouhuan Zhou, and Y.C. Chen. Opt. Commun. Phase locking of Q-switched laser arrays. 2009; 282:1622-1625.
    8. Fanting Kong, Liping Liu, Charlotte Sanders, Y. C. Chen, and Kotik K. Lee. Appl. Phys. Lett. Phase locking of nanosecond pulses in a passively Q-switched two-element fiber laser array. 2007; 90:151110.
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