Mode-locked thulium–bismuth codoped fiber laser using graphene saturable absorber in ring cavity
We demonstrate mode locking of a thulium–bismuth codoped fiber laser (TBFL) operating at 1901.6 nm, using a graphene-based saturable absorber (SA). In this work, a single layer graphene is mechanically exfoliated using the scotch tape method and directly transferred onto the surface of a fiber pigta...
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Published: |
Optical Society of America
2013
|
| Subjects: | |
| Online Access: | http://eprints.um.edu.my/14338/ https://www.osapublishing.org/ao/abstract.cfm?uri=ao-52-6-1226 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | We demonstrate mode locking of a thulium–bismuth codoped fiber laser (TBFL) operating at 1901.6 nm, using a graphene-based saturable absorber (SA). In this work, a single layer graphene is mechanically exfoliated using the scotch tape method and directly transferred onto the surface of a fiber pigtail to fabricate the SA. The obtained Raman spectrum characteristic indicates that the graphene on the core surface has a single layer. At 1552 nm pump power of 869 mW, the mode-locked TBFL self starts to generate an optical pulse train with a repetition rate of 16.7 MHz and pulse width of 0.37 ps. This is a simple, low-cost, stable, and convenient laser oscillator for applications where eye-safe and low-photon-energy light sources are required, such as sensing and biomedical diagnostics. |
|---|