DataVXACS Applied Materials & InterfacesPaper
journal article·2026-07-15

Breakthrough in High Quality LaBGeO 5 Crystal for Deep Ultraviolet Quasi-Phase Matching Application

Jiahao Wang, Lingfei Lv, Rongbing Su, Zijian Zhu, Hongjiang Wu, Hongyuan Sha, Zujian Wang, Bin Su, Chao He

ACS Applied Materials & Interfaces· Volume 18· Issue 27
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Source abstract

Abstract

Deep ultraviolet (UV) lasers are essential for advanced laser technologies. Currently, only β-BaB 2 O 4 (β-BBO) and CsLiB 6 O 10 (CLBO) are used for nonlinear wavelength conversion in this range, but they face limitations like hygroscopicity and walk-off effects. Thus, alternative materials are needed for efficient frequency conversion. LaBGeO 5 crystals, a promising ferroelectric candidate for UV quasi-phase matching (QPM) devices, have been synthesized with well-developed facets. LBGO showcases remarkable properties: an absorption edge at 195 nm, second-harmonic generation intensity of 1.5 × KDP, and a laser-induced damage threshold of about 2.4 GW/cm 2 (@1064 nm, 10 ns, 10 Hz), with a transmittance of 78% at 266 nm. Its domain-switching ability arises from the distortion of [BO 4 ] tetrahedrons in [GeB 2 O 9 ] rings, marking a significant breakthrough in QPM crystal research and promising advancements in UV laser applications.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Crystal Structures and Properties · Photorefractive and Nonlinear Optics · Solid State Laser Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Functional Crystals and Devices, Fujian Institute of Research on the Structure of Matter

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Research Center for Crystal Materials, CAS Key Laboratory of Functional Materials and Devices for Special Environmental Conditions, Xinjiang Key Laboratory of Functional Crystal Materials, Xinjiang Engineering Technology Research Center for Optoelectronic Crystals and Devices, Xinjiang Technical Institute of Physics & Chemistry

Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · he Self-deployed Project of State Key Laboratory of Functional Crystals and Devices · Xinjiang Talent Development Fund Project · She Self-deployed Project of State Key Laboratory of Functional Crystals and Devices · the Science and Technology Project of Fujian Province

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