Self-Organization of a 2D Lattice on a Surface of Ge Single Crystal after Irradiation with Yag: ND Laser

TL;DR

This study reports the experimental self-organization of a 2D lattice on germanium crystal surfaces after pulsed laser irradiation, highlighting temperature gradients and overheating effects at high laser intensities.

Contribution

It provides experimental evidence and temperature distribution calculations for laser-induced self-organization on Ge crystal surfaces.

Findings

Self-organization of 2D lattice observed post-irradiation

Overheating occurs at laser intensities above 30 MW/cm²

Two distinct temperature gradients are identified

Abstract

Experimentally observed self-organization of a 2D lattice on the surface of Ge single crystal after irradiation by pulsed YAG: Nd laser is repoted. The calculation of time depended distribution of temperature in bulk of the Ge sample show that overheating of the crystal lattice occurs at laser radiation intensities exceeding 30MW/cm2.The two temperature gradients are exists.