Passively mode-locked laser at 1μm region based on tungsten trioxide (WO3) saturable absorber

Mode-locked ytterbium-doped fiber laser with zinc phthalocyanine thin film saturable absorber

“…Including 50 m long SMF spool in the cavity increased net cavity dispersion which helped to achieve mode-locking instead of Q-switching [64,65]. A polarization controller (PC) was not added in this experimental setup as the interplay of cavity dispersion and the SA nonlinearity was sufficient to obtain mode-locking operation [66][67][68]. Hence, a PC was excluded from the experimental setup to avoid any additional insertion loss contribution from the PC.…”

2D tungsten nanosheets: ascendant nonlinear absorption properties in the ultraviolet band

“…30 In addition, tungsten oxide also has important research and application value, such as in optics and sensing applications. [31][32][33][34] However, there are few studies on the nonlinear absorption properties of the transition metal tungsten, which inspired us to strengthen the exploration of its nonlinear properties.…”

Noise‐like pulse generation with tungsten trioxide/polydimethylsiloxane‐clad microfiber saturable absorber

“…19 Recently, the use of tungsten trioxide (WO 3 ) has been demonstrated as an alternative saturation absorption material due to its great influence toward optical nonlinearity, thus making it attractive for ultrafast laser generation. [20][21][22][23] Taking this advantage, there is still a possible room for improvement by exploring the potential functionality of WO 3 -based SA in different dynamics of laser cavity configuration. Therefore, further investigation by varying the components or devices in the laser cavity with WO 3 -based SA is still of interest, especially within the NLP operation regime.…”

“…It is also worth to note that NLP mode‐locking can be realized by using SAs such as graphene, 18 carbon nanotube 8 and tungsten disulfide (WS 2 ) 19 . Recently, the use of tungsten trioxide (WO 3 ) has been demonstrated as an alternative saturation absorption material due to its great influence toward optical nonlinearity, thus making it attractive for ultrafast laser generation 20–23 . Taking this advantage, there is still a possible room for improvement by exploring the potential functionality of WO 3 ‐based SA in different dynamics of laser cavity configuration.…”