Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • 2019 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 2019),
  • paper cj_13_5

High slope efficiency and high power 813-nm Tm3+: ZBLAN fiber MOPA for the lattice laser of Sr optical lattice clock

Not Accessible

Your library or personal account may give you access

Abstract

The Sr optical lattice clock (Sr-OLC) is expected to be the next frequency standards, and the transportability has been improved. The requirements of lattice laser of Sr-OLC are the wavelength of 813nm, the output power more than 1 W, the linewidth of narrower than 1 MHz with single longitudinal and transverse mode. A Ti:Sapphire laser is currently used as the lattice laser. However it has disadvantage of its lack of long-term stable operation. This becomes one of the largest problems for space Sr-OLC. Therefore, as a new lattice laser, we have developed a master oscillator fiber power amplifier (MOPA) at around 810 nm with Tm3+-doped ZBLAN fiber. Since the phonon energy of ZBLAN fibers are lower than silica fibers, the upper state lifetime of 810 nm emission level of Tm3+-doped ZBLAN fiber (1350 µs) is much longer than that of Tm3+-doped standard silica fiber (14.2 µs) [1]. In the previous conference, we reported the maximum output power of 1.68 W at 813 nm with our MOPA system. However our MOPA system had the problem of its low reliability due to the photodarkening and low slope efficiency. In order to improve the operation property, we applied the dual-wavelength pumping and the real-time photobleaching. The experimental set up is shown in Fig.1.

© 2019 IEEE

PDF Article
More Like This
A stable watt-class 813-nm Tm3+-doped ZBLAN fiber MOPA with photobleaching

Eiji Kajikawa, Tomohiro Ishii, Kazuhiko Ogawa, and Mitsuru Musha
JM5A.11 Advanced Solid State Lasers (ASSL) 2019

Development of an 813-nm Tm-doped ZBLAN fiber amplifier for the Sr optical lattice clock

Yu-ichi Takeuchi, Masanori Uehara, Kenta Kohno, Mitsuru Musha, Ken’ichi Nakagawa, and Ken-ichi Ueda
CJ_8_6 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2013

A watt-class narrow-linewidth MOFPA system at 813 nm by using a Tm3+ -doped fluoride fiber amplifier for the Sr optical lattice clock

E. Kajikawa, Y. Takeuchi, K. Kohno, K. Nakagawa, and M. Musha
CJ_14_4 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2015

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved