[10a-N321-1~11] 3.7 Laser processing

[10a-N321-6] Formation of high-density NV centers inside diamond by femtosecond laser

〇Torataro Kurita¹, Yasuhiko Shimotsuma¹, Ryusei Yanoshita¹, Kouhei Kinouchi¹, Masanori Fujiwara², Masahiro Fujie², Mizuochi Norikazu², Masahiro Shimizu¹, Miura Kiyotaka¹ (1.Kyoto Univ., 2.ICR, Kyoto Univ)

Keywords:NV center, femtosecond laser, diamond

We report on formation of high-density NV centers inside diamond by femtosecond laser.We achieved formation of NV centers with concentration of up to 3×10¹⁶ /cm³ inside a diamond by femtosecond laser without a post annealing process. The Hahn-echo measurement revealed that T₂ of pristine diamond regions and laser irradiated regions are similar values and effect of laser induced damages on T₂ was not significant compared with that of substitutional nitrogen centers.