Abstract
Two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides, and black phosphorus, have attracted intense interest for applications in ultrafast pulsed laser generation, owing to their strong light-matter interactions and large optical nonlinearities. However, due to the mismatch of the bandgap, many of these 2D materials are not suitable for applications at near-infrared (NIR) waveband. Here, we report nonlinear optical properties of 2D α-Mo2C crystals and the usage of 2D α-Mo2C as a new broadband saturable absorber for pulsed laser generation. It was found that 2D α-Mo2C crystals have excellent saturable absorption properties in terms of largely tunable modulation depth and very low saturation intensity. In addition, ultrafast carrier dynamic results of 2D α-Mo2C reveal an ultrashort intraband carrier recovery time of 0.48 ps at 1.55 μm. By incorporating 2D α-Mo2C saturable absorber into either an Er-doped or Yb-doped fiber laser, we are able to generate ultrashort pulses with very stable operation at central wavelengths of 1602.6 and 1061.8 nm, respectively. Our experimental results demonstrate that 2D α-Mo2C can be a promising broadband nonlinear optical media for ultrafast optical applications.
| Original language | English |
|---|---|
| Pages (from-to) | 1808-1816 |
| Number of pages | 9 |
| Journal | ACS Photonics |
| Volume | 5 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 16 May 2018 |
Keywords
- 2D α-MoC crystal
- broadband
- fiber laser
- mode-locking
- saturable absorber
Cite this
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Ultrathin 2D Transition Metal Carbides for Ultrafast Pulsed Fiber Lasers. / Tuo, Mingfen; Xu, Chuan; Mu, Haoran; Bao, Xiaozhi; Wang, Yingwei; Xiao, Si; Ma, Weiliang; Li, Lei; Tang, Dingyuan; Zhang, Han; Premaratne, Malin; Sun, Baoquan; Cheng, Hui-Ming; Li, Shaojuan; Ren, Wencai; Bao, Qiaoliang.
In: ACS Photonics, Vol. 5, No. 5, 16.05.2018, p. 1808-1816.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - Ultrathin 2D Transition Metal Carbides for Ultrafast Pulsed Fiber Lasers
AU - Tuo, Mingfen
AU - Xu, Chuan
AU - Mu, Haoran
AU - Bao, Xiaozhi
AU - Wang, Yingwei
AU - Xiao, Si
AU - Ma, Weiliang
AU - Li, Lei
AU - Tang, Dingyuan
AU - Zhang, Han
AU - Premaratne, Malin
AU - Sun, Baoquan
AU - Cheng, Hui-Ming
AU - Li, Shaojuan
AU - Ren, Wencai
AU - Bao, Qiaoliang
PY - 2018/5/16
Y1 - 2018/5/16
N2 - Two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides, and black phosphorus, have attracted intense interest for applications in ultrafast pulsed laser generation, owing to their strong light-matter interactions and large optical nonlinearities. However, due to the mismatch of the bandgap, many of these 2D materials are not suitable for applications at near-infrared (NIR) waveband. Here, we report nonlinear optical properties of 2D α-Mo2C crystals and the usage of 2D α-Mo2C as a new broadband saturable absorber for pulsed laser generation. It was found that 2D α-Mo2C crystals have excellent saturable absorption properties in terms of largely tunable modulation depth and very low saturation intensity. In addition, ultrafast carrier dynamic results of 2D α-Mo2C reveal an ultrashort intraband carrier recovery time of 0.48 ps at 1.55 μm. By incorporating 2D α-Mo2C saturable absorber into either an Er-doped or Yb-doped fiber laser, we are able to generate ultrashort pulses with very stable operation at central wavelengths of 1602.6 and 1061.8 nm, respectively. Our experimental results demonstrate that 2D α-Mo2C can be a promising broadband nonlinear optical media for ultrafast optical applications.
AB - Two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides, and black phosphorus, have attracted intense interest for applications in ultrafast pulsed laser generation, owing to their strong light-matter interactions and large optical nonlinearities. However, due to the mismatch of the bandgap, many of these 2D materials are not suitable for applications at near-infrared (NIR) waveband. Here, we report nonlinear optical properties of 2D α-Mo2C crystals and the usage of 2D α-Mo2C as a new broadband saturable absorber for pulsed laser generation. It was found that 2D α-Mo2C crystals have excellent saturable absorption properties in terms of largely tunable modulation depth and very low saturation intensity. In addition, ultrafast carrier dynamic results of 2D α-Mo2C reveal an ultrashort intraband carrier recovery time of 0.48 ps at 1.55 μm. By incorporating 2D α-Mo2C saturable absorber into either an Er-doped or Yb-doped fiber laser, we are able to generate ultrashort pulses with very stable operation at central wavelengths of 1602.6 and 1061.8 nm, respectively. Our experimental results demonstrate that 2D α-Mo2C can be a promising broadband nonlinear optical media for ultrafast optical applications.
KW - 2D α-MoC crystal
KW - broadband
KW - fiber laser
KW - mode-locking
KW - saturable absorber
UR - http://www.scopus.com/inward/record.url?scp=85047202492&partnerID=8YFLogxK
U2 - 10.1021/acsphotonics.7b01428
DO - 10.1021/acsphotonics.7b01428
M3 - Article
VL - 5
SP - 1808
EP - 1816
JO - ACS Photonics
JF - ACS Photonics
SN - 2330-4022
IS - 5
ER -