Sb_2Te_3-deposited D-shaped fiber as a saturable absorber for mode-locked Yb-doped fiber lasers

Abstract

We present a study on a antimony telluride (Sb 2 Te 3 )-deposited side-polished fiber device as a saturable absorber for Yb-doped modelocked fiber lasers. Thin layers of Sb 2 Te 3 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 Sb 2 Te 3 absorber emitted 5.9 ps pulses with 4 mW of average output power.

Towards Antimonene and 2D Antimony Telluride through Electrochemical Exfoliation

“…The peaks appeared about 200 and 250 cm −1 were associated with the formation of antimony oxides at the surface. In the exfoliated samples of Sb 2 Te 3 , the E 2 g mode was also identified but with a Raman blueshift as a consequence of the compactness reduction in the sheets …”

Ultrafast Nonlinear Optical Response in Plasmonic 2D Molybdenum Oxide Nanosheets for Mode‐Locked Pulse Generation

“…The results also provide a strong evidence to prove the reasonable modulation depth and response time of plasmonic MoO 3 nanosheets. With proper dispersion management, the generated pulse can be further shortened by pulse compressing techniques outside the cavity, which is necessary for the optimization of the YDFL and certainly deserves more detailed investigation.…”

“…Furthermore, atomically thin thickness, tailorable electronic structures, specific plane confinement, and unique interlayer coupling allow 2D materials to interact strongly with light and offer optical response over a wide range of the electromagnetic spectrum, which are of great significance in strengthening NLO effects and the development of various optical modulators and switches for pulse lasers and photonic devices. Up to the present, successful demonstrations of these NLO devices have been enabled by a wide range of 2D materials, such as topological insulators, graphene, transition metal dichalcogenides, black phosphorus, Mxenes, and by complex metalloid compound . On the other hand, the plasmonic properties of both gapless graphene and different gapped 2D semiconductors, however, showed active spectral region primarily in the MIR due to their low carrier density, thus strongly limiting their applications.…”

Mesoporous carbon nanospheres deposited onto D-shaped fibers for femtosecond pulse generation

“…We also used the MCNs deposited onto the microber as the SA with evanescent eld, but the microber is not robust enough for the long-term operation, and the microber will be easy to introduce large loss and strong nonlinearity for the small core size. [25][26][27] In order to overcome these drawbacks, an alternative method combining a D-shaped ber (DF) and MCNs as the SAs has been proposed, which could improve the stability of femtosecond lasers for a longer nonlinear interaction length between the guided light and SAs and further enhance the damage threshold due to the weak evanescent wave interacting with SAs.…”