Broadband light generation by noncollinear parametric downconversion |
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Authors: | Carrasco Silvia Nasr Magued B Sergienko Alexander V Saleh Bahaa E A Teich Malvin C Torres Juan P Torner Lluis |
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Institution: | Department of Electrical and Computer Engineering, Boston University, Massachusetts 02215, USA. carrasc@fas.harvard.edu |
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Abstract: | Broadband light generation is demonstrated by noncollinear spontaneous parametric downconversion with a cw pump laser. By use of a suitable noncollinear phase-matching geometry and a tightly focused pump beam, downconverted signals that feature a bell-shaped spectral distribution with a bandwidth approaching 200 nm are obtained. As an application of the generated broadband light, submicrometer axial resolution in an optical coherence tomography scheme is demonstrated; a free-space resolution down to 0.8 microm was achieved. |
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