Size-dependent Amplified Spontaneous Emission from Organic Crystal Slabs |
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| Authors: | YANG Jie DING Ran WANG Rui LIU Chang-jiang LI Ai-wu YU Yong-sen WANG Ji-ping and YANG Han |
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| Institution: | 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 |
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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. |
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| Keywords: | Amplified spontaneous emission Size-dependent Two-photon absorption |
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