[9a-N302-1~11] 3.13 Silicon photonics, Photonics-electronics convergence, Optical control

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[9a-N302-9] Hydroxyl groups reduction in optical nanofibers via in-fiber laser heating

〇(D)Koki Oguri¹, Kenichi Harada¹, Samuel Ruddell¹, Karen Webb¹, Takao Aoki^1,2 (1.Waseda Univ, 2.RIKEN RQC)

Keywords:

Optical nanofiber,Laser heating,Hydroxyl group

Optical nanofibers fabricated using a standard oxyhydrogen flame exhibit losses at wavelengths around 1380 nm due to absorption by hydroxyl groups generated during the fabrication process. This loss poses a challenge for the realization of quantum electrodynamic systems using ytterbium atoms. We have developed a method to reduce these hydroxyl groups by heating them with a laser guided within the nanofiber under vacuum conditions. The temperature of the optical nanofiber during heating is estimated using an interferometer.