4.3 Article

A 1625 nm Q-Switched All-Fiber Laser

期刊

ADVANCED PHOTONICS RESEARCH
卷 3, 期 3, 页码 -

出版社

WILEY
DOI: 10.1002/adpr.202100320

关键词

erbium dopant; element hybridization; glass fibers; Q-switched lasers

资金

  1. National Key R&D Program of China [2020YFB1805901]
  2. National Science Fund for Distinguished Young Scholars [62125502]
  3. National Natural Science Foundation of China [61905205]
  4. Key Program of Guangzhou Scientific Research Special Project [201904020013]
  5. Key R&D Program of Guangzhou [202007020003]
  6. Science and Technology Project of Guangdong Province [2021A0505030004]
  7. Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01X137]
  8. Fundamental Research Funds for the Central University

向作者/读者索取更多资源

A Q-switched all-fiber Er-doped laser operating at a wavelength up to 1625 nm is proposed and demonstrated. Stable laser pulse outputs are achieved using a hybrid glass fiber with gain extended to U-band as the gain medium. The laser has a compact cavity and can generate pulses with high energy and short duration.
A Q-switched all-fiber Er-doped laser operated at a wavelength up to 1625 nm is proposed and demonstrated. A self-developed, element hybridization (Al, Ge, La, P, and Er in the core, Si and P in the cladding region) glass fiber with gain extended to U-band is employed as gain medium. The compact laser cavity contains a fiber Bragg grating which was manufactured by means of point-by-point femtosecond laser inscription technique. Stable Q-switched laser pulse train is successfully achieved using a semiconductor saturable absorber mirror at a low pump threshold of 29 mW. The laser has a maximum single pulse energy of 746 nJ and a minimum pulse duration of 26.8 mu s. The pulse repetition rate can be gradually tuned from 6.47 to 11.87 kHz by increasing the pump power. In particular, the laser wavelength of the Q-switched all-fiber laser can be as long as 1625 nm. This is, to the best of our knowledge, the longest wavelength for the Q-switched Er-doped fiber lasers at this waveband.

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