Sb_2Te_3-deposited D-shaped fiber as a saturable absorber for mode-locked Yb-doped fiber lasers
Maciej Kowalczyk , Jakub Bogusławski , Rafał Zybała , Krzysztof Mars , Andrzej Mikuła , Grzegorz Soboń , Jarosław Sotor
AbstractWe present a study on a antimony telluride (Sb2Te3)-deposited side-polished fiber device as a saturable absorber for Yb-doped mode-locked fiber lasers. Thin layers of Sb2Te3 with variable length were deposited by a pulsed magnetron sputtering technique. We demonstrate measured characteristics of the device and show that it can be treated as a hybrid component - tunable polarizer with saturable absorption properties. The polarizing extinction ratio varies from 1.5 dB up to 17.1 dB with increasing length of the deposition. The fiber components were employed in all-normal Yb-doped fiber cavities. All devices enabled for mode-locked operation by means of hybrid mode-locking or nonlinear polarization evolution mechanism. In particular, the laser with 2 mm long Sb2Te3 absorber emitted 5.9 ps pulses with 4 mW of average output power.
|Journal series||Optical Materials Express, ISSN 2159-3930|
|Publication size in sheets||0.5|
|Keywords in Polish||lasery światłowodowe; nieliniowe materiały optyczne; ultraszybkie lasery|
|Keywords in English||Lasers, fiber; Lasers, ytterbium; Mode-locked lasers; Nonlinear optical materials; Ultrafast lasers|
|Score|| = 35.0, 12-12-2019, ArticleFromJournal|
= 40.0, 12-12-2019, ArticleFromJournal
|Publication indicators||= 20; = 24; : 2016 = 1.23; : 2016 = 2.591 (2) - 2016=2.857 (5)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.