Growth and Properties of Large Size CLBO Single Crystal

Abstract

Abstract: CsLiB₆O₁₀(CLBO) is a high-performance nonlinear optical crystal, particularly suitable for high-power ultraviolet laser by fourth harmonic generation (FHG, 266 nm) and fifth harmonic generation (FIHG, 210 nm). A CLBO crystal with the size of 120 mm×112 mm×62 mm was successfully grown using top seeded solution growth (TSSG) method in this work. The grown CLBO crystal exhibits a complete appearance without macroscopic defects such as cracking and visible scattering particles. A CLBO FIHG crystal component was cut from this crystal, and its UV-visible-near infrared transmittance, optical uniformity and weak absorption properties were analyzed in detail. The results include that, the mean transmittance exceeds 90% from 210 nm to 1 800 nm, optical uniformity result is 3.8×10^-5 and the weak absorption is 90×10^-6 cm^-1 at 1 064 nm. All of these results indicate that the as-grown CLBO crystal possesses good transmittance in the ultraviolet region, high optical uniformity and low weak absorption, laying the foundation for subsequent research on related applications.

Key words: CsLiB₆O₁₀, nonlinear optical crystal, top seeded solution growth method, transmittance, optical uniformity, weak absorption

CLC Number:

O78
O734

SHI Shuangshuang, WANG Guoying, XIAO Yabo, WANG Haili, CHEN Jianrong. Growth and Properties of Large Size CLBO Single Crystal[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2023, 52(12): 2146-2150.

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