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 frequencies (αTHz=.5 to 4.5 cm-1 for 1 to 3 THz). Since gallium arsenide is a direct bandgap material, multiphoton absorption and nonlinear refraction are issues for efficiency and system design in the mid infrared. In fact, linear absorption makes this material opaque at or below 870 nm. Additionally, two photon absorption is quite pronounced between 870 nm and 1.74 μm. I will present the theory then the experimental data for tw...
Following a review of the theory of terahertz generation via optical rectification in nonlinear crys...
The fabrication and nondestructive evaluation of semiconductor technologies remain today primarily b...
The coherent interaction of light with matter imprints the phase information of the light field on t...
Background: “Metamaterial ” is defined as an artificially structured electromagnetic material exhib...
Title from PDF of title page (University of Missouri--Columbia, viewed on May 24, 2012).The entire d...
The Study of Laser Pulse Controlled Terahertz Pulse Generation in Gallium Arsenid
Most commercially available terahertz spectrometers make use of resonant and non-resonant methods to...
The interaction of intense laser pulses with atmospheric gases is studied in two contexts: (i) the g...
Content synopsis of the following paper: Matteo Cherchi, Alberto Taormina, Alessandro C. Busacca, Ro...
Graduation date: 2012In this thesis, I present studies in the field of terahertz (THz) spectroscopy....
We compute from first principles the infrared dispersion of the nonlinear susceptibility χ(2) in zin...
• Links to our collaborators • References and published papers Last change: July 27, 2005 Research t...
Thesis (Ph.D.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Autho...
The design, measurement, and analysis of a range of artificial materials for use at terahertz freque...
We develop a new method to calculate nonlinear optical (NLO) susceptibility and give a definition of...
Following a review of the theory of terahertz generation via optical rectification in nonlinear crys...
The fabrication and nondestructive evaluation of semiconductor technologies remain today primarily b...
The coherent interaction of light with matter imprints the phase information of the light field on t...
Background: “Metamaterial ” is defined as an artificially structured electromagnetic material exhib...
Title from PDF of title page (University of Missouri--Columbia, viewed on May 24, 2012).The entire d...
The Study of Laser Pulse Controlled Terahertz Pulse Generation in Gallium Arsenid
Most commercially available terahertz spectrometers make use of resonant and non-resonant methods to...
The interaction of intense laser pulses with atmospheric gases is studied in two contexts: (i) the g...
Content synopsis of the following paper: Matteo Cherchi, Alberto Taormina, Alessandro C. Busacca, Ro...
Graduation date: 2012In this thesis, I present studies in the field of terahertz (THz) spectroscopy....
We compute from first principles the infrared dispersion of the nonlinear susceptibility χ(2) in zin...
• Links to our collaborators • References and published papers Last change: July 27, 2005 Research t...
Thesis (Ph.D.)--Boston University PLEASE NOTE: Boston University Libraries did not receive an Autho...
The design, measurement, and analysis of a range of artificial materials for use at terahertz freque...
We develop a new method to calculate nonlinear optical (NLO) susceptibility and give a definition of...
Following a review of the theory of terahertz generation via optical rectification in nonlinear crys...
The fabrication and nondestructive evaluation of semiconductor technologies remain today primarily b...
The coherent interaction of light with matter imprints the phase information of the light field on t...