Chinese Optics Letters, Volume. 11, Issue 11, 111901(2013)
Frequency up-conversion imaging with 60-dB gain using picosecond optical parametric amplif ier
A weak infrared (IR) image amplifier with more than 60-dB optical gain and frequency up-conversion is developed from a picosecond (PS) 355-nm pumped gated optical parametric amplifier (OPA) in a \beta- BaB2O4 (BBO) crystal. The IR image at 1064 nm is amplified and up-converted into the visible region at 532 nm by parametric amplification and up-conversion. With the optimized optical gain, the lowest detectable energy of the image can be as low as 1.8 femto-Joule per pulse, which is three orders of magnitude lower than the detection limit of a charge-coupled device (CCD) camera. The transversal resolution of the OPA imaging is investigated, and the approaches for higher detection sensitivity and higher transversal resolution are proposed.
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Xiaoqing Li, Jing Yang, Xinzhi Sheng, Jingyuan Zhang, Dafu Cui, Qinjun Peng, Zuyan Xu. Frequency up-conversion imaging with 60-dB gain using picosecond optical parametric amplif ier[J]. Chinese Optics Letters, 2013, 11(11): 111901
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Received: Sep. 3, 2013
Accepted: Sep. 25, 2013
Published Online: Nov. 25, 2013
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