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A novel magneto-optical crystal Yb:TbVO 4
Journal of Crystal Growth ( IF 1.7 ) Pub Date : 2018-04-01 , DOI: 10.1016/j.jcrysgro.2017.12.005
Xianchao Zhu , Heng Tu , Zhanggui Hu

Abstract Highly transparent Yb:TbVO 4 single crystal with dimensions of O27 × 41 mm 3 alomost without scattering defects has been successfully grown by Czochralski technique. The spectra, thermal properties and laser-induced damage threshold were investigated in detailed. The Faraday rotation (FR) measurement was carried out by means of extinction method. The Verdet constant comes up to 80 rad m −1 T −1 at 1064 nm, significantly larger than TbVO 4 (58 rad m −1 T −1 ) and TGG (40 rad m −1 T −1 ) reported. Meanwhile, the as-grown crystal presents lower absorption coefficient and higher magneto-optical figure of merit at measured wavelength in comparison with TGG. Moreover, the crystal exhibits a substantially improved extinction ratio (42 dB) in contrast with TbVO 4 (29 dB), and exceeds the highest value of TGG (40 dB). These advantages make Yb:TbVO 4 a highly promising magneto-optical material candidate for optical isolators in the visible-near infrared region.

中文翻译:

一种新型磁光晶体Yb:TbVO 4

摘要 利用直拉技术成功生长了尺寸为O27 × 41 mm 3 的高透明Yb:TbVO 4 单晶,几乎没有散射缺陷。详细研究了光谱、热性能和激光诱导损伤阈值。法拉第旋转(FR)测量是通过消光法进行的。Verdet 常数在 1064 nm 处达到 80 rad m -1 T -1 ,明显大于报道的 TbVO 4 (58 rad m -1 T -1 ) 和 TGG (40 rad m -1 T -1 )。同时,与TGG相比,生长的晶体在测量波长处具有较低的吸收系数和较高的磁光品质因数。此外,与 TbVO 4 (29 dB) 相比,该晶体表现出显着改善的消光比 (42 dB),并且超过了 TGG 的最高值 (40 dB)。这些优势使 Yb:
更新日期:2018-04-01
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