Carrier Transport in Semiconductors and Nonlinear Optics

这个项目将继续我们正在进行的半导体非线性光学和载流子输运的研究。半导体中的这种传输为改善半导体的光学响应提供了希望。通过使用先进的材料，包括多量子阱（MQW）在dping超层（nipi结构）中，可以在有用的波长上实现敏感和大的非线性。提出了几个合作项目，这些项目都将有助于提高半导体材料在非线性和光学应用中的实用性。这些研究包括：a)利用1.06 um的GaInAsP饱和吸收实现Nd:YAG激光器的锁模；b)由p-i-n和inpi结构中的SPSLS MQW波导组成的改进光调制器；C)对变形层InGaAs/GaAs MQW异质nipi调制器中载流子传输的Psec研究；d)更好地理解MQW异质nipi的实验；e)对MQW异质nipi的载流子传输建模；f)改进MQW异质nipi的设计。在建议的新项目中，目前以980微米进行的研究将扩展至1.3微米及/或1.55微米。所提出的研究不仅将提供更有用的非线性光学器件，而且还有助于理解在量子阱和内场存在的情况下应变材料中的载流子输运。这些结果对于更好地理解光电激光器、调制器、探测器和光开关是必要的。*** *** *** *** *** *** *** *** *** *** *** *** **我问$ $ (F / Q $ Q / 1快递符号& Arial 5 Courier New0 (1 r} D c ' D m x 1 r Y | = ' 3 ' ' h % %) (S r:\WW20USER\ABSTRACT。DOT摘要Alicia E. Harris

9222640 Garmire This project will continue our on-going investigations of nonlinear optics and carrier transport in semiconductors. This transport in semniconductors and offers promise for improving the optical response of semiconductors. By using advanced materials, which include multiple quantum wells (MQW) in dping superlatices (nipi structures), sensitive and large nonlinearities at useful wavelengths can be achieved. Several collaborative projects are proposed which will all contribute to improved usefulness of semiconductor materials for nonlinear and optical applications. These are: a) Mode-locking of Nd:YAG laser using saturabel absorption of GaInAsP at 1.06 um, b) Improved optical modulators consisting of SPSLS MQ W waveguides in p-i-n and inpi structures, C) Psec studies of carrier transprot in strained-layer InGaAs/GaAs MQW hetero-nipi's modulators, d) Eperiments to better understand MQW hetero-nipi's e) Modelling carrier transport in MQW hetero-nipi's, f) improved design for MQW hetero-nipi's. Investigations to date at 980 nm will be extended to 1.3 um and/or 1.55 um in the proposed new project. The proposed studies will provide no only more useful nonlinear optical devies, but also assist in the understanding of carrier transport within strained materials in the presence of both quantum wells and inernal fields. The results are needed for the better understanding of opto-electronic lasers, modulatores, detectores, and optical switches. *** v s t nipitransportExperimentsModelingheaternip'sheterodevicesinternalmodulatorsdetectors-going investigations of nonlinear optics and carrier trans port in semiconduc Q ` d m x L Q $ $ ( F / Q $ Q / 1 Courier Symbol & Arial 5 Courier New 0 ( 1 r } D c ` d m x 1 R Y | = ' 3 O " h % % ) ( S R:\WW20USER\ABSTRACT.DOT abstract Alicia E. Harris Alicia E. Harris