Controllable Snail-Paced Light in Biological Bacteriorhodopsin Thin Film

by: Pengfei Wu, Rao

Physical Review Letters, Vol. 95, No. 25. (2005)

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Abstract

We observe that the group velocity of light is reduced to an extremely low value of 0.091 mm/s in a biological thin film of bacteriorhodopsin at room temperature. By exploiting unique features of a flexible photoisomerization process for coherent population oscillation, the velocity is all-optically controlled over an enormous span, from snail-paced to normal light speed, with no need of modifying the characteristics of the incident pulse. Because of the large quantum yield for the photoreaction in this biochemical system, the ultraslow light is observed even at low light levels of microwatts, indicating high energy efficiency.

@article{citeulike:2754427, abstract = {We observe that the group velocity of light is reduced to an extremely low value of 0.091 mm/s in a biological thin film of bacteriorhodopsin at room temperature. By exploiting unique features of a flexible photoisomerization process for coherent population oscillation, the velocity is all-optically controlled over an enormous span, from snail-paced to normal light speed, with no need of modifying the characteristics of the incident pulse. Because of the large quantum yield for the photoreaction in this biochemical system, the ultraslow light is observed even at low light levels of microwatts, indicating high energy efficiency.}, author = {Wu, Pengfei and Rao}, citeulike-article-id = {2754427}, doi = {10.1103/PhysRevLett.95.253601}, journal = {Physical Review Letters}, keywords = {2006, biology, cool, film, focus, material, optical}, number = {25}, posted-at = {2008-05-04 20:37:36}, priority = {2}, publisher = {APS}, title = {Controllable Snail-Paced Light in Biological Bacteriorhodopsin Thin Film}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000095000025253601000001\&idtype=cvips\&gifs=yes}, volume = {95}, year = {2005} }

RIS record

TY - JOUR ID - citeulike:2754427 TI - Controllable Snail-Paced Light in Biological Bacteriorhodopsin Thin Film JF - Physical Review Letters VL - 95 IS - 25 PB - APS N2 - We observe that the group velocity of light is reduced to an extremely low value of 0.091 mm/s in a biological thin film of bacteriorhodopsin at room temperature. By exploiting unique features of a flexible photoisomerization process for coherent population oscillation, the velocity is all-optically controlled over an enormous span, from snail-paced to normal light speed, with no need of modifying the characteristics of the incident pulse. Because of the large quantum yield for the photoreaction in this biochemical system, the ultraslow light is observed even at low light levels of microwatts, indicating high energy efficiency. KW - 2006 KW - biology KW - cool KW - film KW - focus KW - material KW - optical AU - Wu, Pengfei AU - Rao PY - 2005/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000095000025253601000001&idtype=cvips&gifs=yes ER -

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