Accession Number:

ADA561701

Title:

Harmonic Generation and Low-Light-Level Nonlinear Optics with Gases in Photonic Band-Gap Fibers

Descriptive Note:

Final rept. 14 May 2008-14 Jan 2009

Corporate Author:

CORNELL UNIV ITHACA NY OFFICE OF SPONSORED PROGRAMS

Personal Author(s):

• Gaeta, Alexander

Report Date:

2010-06-02

Pagination or Media Count:

3.0

Abstract:

We have investigated a highly robust scheme for the pulse compression of femtosecond pulses in gases in which the optimal compression consists of a distinct sequential two plasma-filament structure. By matching experimental trends between linear and circular polarizations propagating through argon, krypton, and xenon with numerical simulations of the complex spatiotemporal dynamics, we gather new insight into effects of how generated plasma, interacts with the propagating pulse field. More specifically, we describe the role of balancing plasma inverse bremsstrahlung scattering with multiphoton ionization rates for pulse compression schemes. In addition, we have studied the collapse dynamics of several spatially separated in-phase Gaussian beams in bulk Kerr media, where each beam has a power P which is slightly above Per the critical power for collapse. We find that complex fusion or annihilation behavior can occur depending on the initial configuration of the beams. Our results shed light on the basic interaction between self focused beams and may provide a mechanism to control the collapse dynamics of such beams.

Descriptors:

• *BAND GAPS
• *GASES
• *HARMONIC GENERATORS
• *NONLINEAR OPTICS
• *PHOTONICS
• BEAMS(RADIATION)
• BEHAVIOR
• BREMSSTRAHLUNG
• COLLAPSE
• CONFIGURATIONS
• ENERGY BANDS
• ENERGY GAPS
• FIBERS
• INVERSE SCATTERING
• LOW LIGHT LEVELS
• NUMERICAL ANALYSIS
• PHOTOIONIZATION
• PLASMAS(PHYSICS)
• POLARIZATION
• PROPAGATION
• PULSE COMPRESSION
• XENON

Subject Categories:

• Electrical and Electronic Equipment
• Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE