Structural distortion-induced magnetoelastic locking in Sr(2)IrO(4) revealed through nonlinear optical harmonic generation.

Structural Distortion-Induced Magnetoelastic Locking in Sr₂IrO₄ Revealed through Nonlinear Optical Harmonic Generation

A structural distortion induced magneto-elastic locking in Sr2IrO4 revealed through nonlinear optical harmonic generation

D. H. Torchinsky, 2 H. Chu, 3 L. Zhao, 2 N. B. Perkins, Y. Sizyuk, T. Qi, G. Cao, and D. Hsieh 2 Institute for Quantum Information and Matter, California Institute of Technology, Pasadena, CA 91125, USA Department of Physics, California Institute of Technology, Pasadena, CA 91125, USA Department of Applied Physics, California Institute of Technology, Pasadena, CA 91125, USA Department of Physic...

Improved Intrinsic Dynamic Distortions in Directly Modulated Semiconductor Lasers by Optical Injection Locking

The effects of optical injection locking on the nonlinear distortions of directly modulated semiconductor distributed feedback (DFB) lasers are investigated experimentally. The second harmonic distortion (SHD) and third harmonic distortion (THD), as well as the third-order intermodulation distortion (IMD3), are measured as functions of modulation frequency for both the free-running and injectio...

Boron nitride substituted 12-crown-4 ether: Theoretical study of structural, thermochemical, and nonlinear optical properties

The structures and stability of 531 novel boron nitride substituted isomers of 12-crown-4 etherverified theoretically. For a collection of 23 selected BN isomers, structural geometry, vibrationalstability, energy gaps, natural bond population analysis, and nonlinear optical responses investigatedtheoretically. The changes of standard enthalpies for ionization reactions and electron affinityreac...

Parity-forbidden excitations of Sr(2)CuO(2)Cl(2) revealed by optical third-harmonic spectroscopy.

We present the first study of nonlinear optical third-harmonic generation (THG) in the strongly correlated charge-transfer insulator Sr(2)CuO(2)Cl(2). For fundamental excitation in the near infrared, the THG spectrum reveals a strongly resonant response for photon energies near 0.7 eV. Polarization analysis reveals this novel resonance to be only partially accounted for by three-photon excitati...