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The nonlinear optical properties of gallium arsenide pertaining to terahertz generation

Creator:

Hurlbut, Walter C.

Abstract:

Gallium arsenide shows excellent promise for terahertz generation using mid infrared. This is for two reasons. First, the indices of refraction for the terahertz (nTHz=3.61 at 1 THz) and mid infrared (nopt=3.431 at 2 μm) are close allowing a long interaction length. Second, the linear absorption is low at terahertz...

Resource Type:

Dissertation

Full Text:

standard fashion. So this appears rst as: (3) M (1)cv = H 0 cv Next, we perturb to an intermediate state
Spatial and temporal variability of carbon dynamics in a tropical forest of Colombia

Creator:

Sierra, Carlos Alberto

Abstract:

Despite the importance of tropical forest ecosystems in the global carbon cycle, there have been few studies of carbon dynamics in this biome. The magnitude of carbon stocks in the tropics and their changes over time are poorly known since ground-based observations are lacking. In this study, total carbon stocks...

Resource Type:

Masters Thesis

Full Text:

, the Ward K. Richardson Family Forestry Faculty Endowment, H. J. Andrews LTER (DEB-0218088), Pacific
Stability of reporter gene expression and RNAi in transgenic poplars over multiple years in the field under vegetative propagation

Creator:

Li, Jingyi

Abstract:

Stable expression of transgenes is required for commercial uses of genetically engineered trees. To better understand the stability of transgene expression under field conditions, we studied transgene expression and RNA interference (RNAi)-induced transgene suppression in 2,480 transgenic poplars (460 transgene insertion events) over three years. Stability of expression was assessed...

Resource Type:

Dissertation

Full Text:

: ______________________________________________________________ Steve H. Strauss