Title :
Manipulation on infrared-single-photon by frequency upconversion
Author :
Haoyang Cui ; Lu, Wei ; Li, Zhifeng ; Liu, Zhaolin ; Chong Wang ; Chen, Xiaoshung ; Hu, Xiaoning ; Ye, Zhenhua
Author_Institution :
Nat. Lab. for Infrared Phys., Chinese Acad. of Sci., Shanghai
Abstract :
The tunability of the two photon absorption coefficient (TPAC) is studied in the HgCdTe p-n junction with the external bias voltage. The TPAC in the p-n junction region will strongly manipulated by the build-in field induced Franz- Keldysh (F-K) effect on the energy band structure. The obvious two photon absorption process is clearly observed as the nonlinear enhancement of photo-voltage on the incident light intensity in the power of 2. The maximum enhancement factor of the TPAC has been achieved as high as 12 times. It can be very useful for the nonlinear optical device.
Keywords :
absorption coefficients; p-n junctions; photons; HgCdTe; build-in field induced Franz-Keldysh effect; energy band structure; external bias voltage; frequency upconversion; infrared-single-photon; light intensity; nonlinear enhancement; nonlinear optical device; p-n junction; photo-voltage; two photon absorption coefficient; Frequency;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516423
