Photoluminescence mapping of laser-damaged β-Ga2O3

Matthew D. McCluskey; Jesse Huso; John S. McCloy; Arkka Bhattacharyya; Sriram Krishnamoorthy; Clint D. Frye; Joel B. Varley; Lars F. Voss

doi:10.1117/12.3032501

17 December 2024 Photoluminescence mapping of laser-damaged β-Ga₂O₃

Matthew D. McCluskey, Jesse Huso, John S. McCloy, Arkka Bhattacharyya, Sriram Krishnamoorthy, Clint D. Frye, Joel B. Varley, Lars F. Voss

Author Affiliations +

Proceedings Volume 13190, Laser-Induced Damage in Optical Materials 2024; 131900A (2024) https://doi.org/10.1117/12.3032501
Event: SPIE Laser Damage, 2024, San Ramon, CA, United States

Abstract

Photoluminescence (PL) mapping was utilized to investigate damage in β-Ga₂O₃ epilayers induced by 1064 nm laser pulses. The intensity and position of the intrinsic UV band were determined and plotted as a false-color image. Two types of damage were identified: circular damage and damage cracks. Circular damage shows lower UV PL intensity than the surrounding material with color centers in a “halo” around the damaged region. Damage cracks are aligned with the a and c axes and show higher PL intensity than undamaged material. Defects in the as-grown material were revealed by shifts in the UV band energy.

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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Matthew D. McCluskey, Jesse Huso, John S. McCloy, Arkka Bhattacharyya, Sriram Krishnamoorthy, Clint D. Frye, Joel B. Varley, and Lars F. Voss "Photoluminescence mapping of laser-damaged β-Ga₂O₃", Proc. SPIE 13190, Laser-Induced Damage in Optical Materials 2024, 131900A (17 December 2024); https://doi.org/10.1117/12.3032501

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