| Autor: |
Koptev, Maksim Yu., Egorova, Olga N., Medvedkov, Oleg I., Semjonov, Sergey L., Galagan, Boris I., Sverchkov, Sergey E., Denker, Boris I., Zapryalov, Alexander E., Kim, Arkady V. |
| Předmět: |
|
| Zdroj: |
Photonics; Oct2022, Vol. 9 Issue 10, pN.PAG-N.PAG, 9p |
| Abstrakt: |
Fiber single-frequency lasers are currently being actively developed, primarily due to the growing number of applications that require compact and reliable narrow-band sources. However, the most developed single-frequency fiber lasers based on phosphate fibers have the disadvantages of low mechanical strength of both the phosphate fibers themselves and their splices. In this paper we demonstrate a single-frequency laser based on a new composite Yb3+-doped active fiber. The core of this fiber is made of phosphate glass with a high concentration of ytterbium ions and its cladding is made of standard silica glass. This structure ensures a higher splicing strength of the fiber compared to the phosphate fibers and provides high resistance to atmospheric moisture. Despite the multimode structure of this fiber, we achieved stable single-frequency lasing with an average power of 10 mW and a spectral contrast of more than 60 dB in the scheme with a short (1.1 cm) cavity formed by two fiber Bragg gratings. We believe that further optimization of this fiber will make it possible to create powerful and reliable single-frequency lasers in the one-micron wavelength range. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
