CRCU

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (5): 862-865.

• Articles • Previous Articles     Next Articles

Size-dependent Amplified Spontaneous Emission from Organic Crystal Slabs

YANG Jie1, DING Ran1, WANG Rui1, LIU Chang-jiang1, LI Ai-wu1, YU Yong-sen1, WANG Ji-ping2* and YANG Han1*   

  1. 1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China;
    2. Department of Radiology, the First Hospital of Jilin University, Changchun 130021, P. R. China
  • Received:2010-12-30 Revised:2011-03-25 Online:2011-09-25 Published:2011-09-06
  • Contact: YANG Han;WANG Ji-ping E-mail:yanghan@jlu.edu.cn; wangjiping@yahoo.com.cn
  • Supported by:

    Supported by the National High-Tech Research and Development Program of China(No.2009AA03Z401), the National Na- tural Science Foundation of China(Nos.61077002, 60807030), and the Project of National Lab for Tsinghua Information Technologies, China.

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Abstract: The authors investigated size-dependent amplified spontaneous emission(ASE) from organic crystals. Specifically, N-(4-{4-[4-(diphenylamino)styryl]styryl}phenyl)-N-phenylbenzene amine(Ph-TPA2) organic crystals were used in the experiment. The ASE threshold was decreased with the decrease of the width of the crystal at the same gain length, which reflects that total internal reflection plays an important role on the ASE properties in these slab organic crystals. The ASE properties pumped by one- and two-photon were also comparatively studied. We found that the thresholds of ASE in two-photon pumping condition are less size-dependent than those in single-   photon condition because of the nonlinear light generation processes in two-photon absorption processes.

Key words: Amplified spontaneous emission, Size-dependent, Two-photon absorption