Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser
The authors controlled the reduction of three graphene oxide (GO) saturable absorber (SA) thin films by controlling the exposure time under a solar simulator and afterwards, incorporated them into an Er-doped fibre laser in order to investigate their effect on ultrashort pulse. The authors also hypo...
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| Format: | Article |
| Language: | English |
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John Wiley & Sons, Inc
2021
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| Online Access: | http://eprints.utm.my/96593/1/MohdAfiqIsmail2021_ReductionControlledGrapheneOxideSaturable.pdf |
| _version_ | 1796866255016165376 |
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| author | Ismail, Mohd. Afiq Abdul Razak, Mohd. Zulhakimi Wadi Harun, Sulaiman Hashim, Abdul Manaf |
| author_facet | Ismail, Mohd. Afiq Abdul Razak, Mohd. Zulhakimi Wadi Harun, Sulaiman Hashim, Abdul Manaf |
| author_sort | Ismail, Mohd. Afiq |
| collection | ePrints |
| description | The authors controlled the reduction of three graphene oxide (GO) saturable absorber (SA) thin films by controlling the exposure time under a solar simulator and afterwards, incorporated them into an Er-doped fibre laser in order to investigate their effect on ultrashort pulse. The authors also hypothesized that the controlled reduction would result in a controlled absorption, and ultimately, a controlled modulation depth. A larger modulation depth would lead to stronger pulse shaping and shorter pulse duration. Sample A was left unreduced, whereas samples B and C were exposed for 15 and 30 min, respectively. Afterwards, their modulation depths were measured using twin-detector method and determined to be 0.69%, 1.2% and 1.94%, respectively. When used as an SA in an Er-doped fibre laser, the result showed pulse duration shortening; from 670 to 520 fs, as well as spectral broadening; from 4.22 to 6.73 nm. In addition, we also observed changes in repetition rate, output power and time-bandwidth product (TBP). The result of this paper shows the feasibility of controlling the modulation depth of a GO SA and conclusively shows the effect of modulation depth on ultrashort pulse. |
| first_indexed | 2024-03-05T21:09:24Z |
| format | Article |
| id | utm.eprints-96593 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T21:09:24Z |
| publishDate | 2021 |
| publisher | John Wiley & Sons, Inc |
| record_format | dspace |
| spelling | utm.eprints-965932022-07-31T01:19:54Z http://eprints.utm.my/96593/ Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser Ismail, Mohd. Afiq Abdul Razak, Mohd. Zulhakimi Wadi Harun, Sulaiman Hashim, Abdul Manaf TK Electrical engineering. Electronics Nuclear engineering The authors controlled the reduction of three graphene oxide (GO) saturable absorber (SA) thin films by controlling the exposure time under a solar simulator and afterwards, incorporated them into an Er-doped fibre laser in order to investigate their effect on ultrashort pulse. The authors also hypothesized that the controlled reduction would result in a controlled absorption, and ultimately, a controlled modulation depth. A larger modulation depth would lead to stronger pulse shaping and shorter pulse duration. Sample A was left unreduced, whereas samples B and C were exposed for 15 and 30 min, respectively. Afterwards, their modulation depths were measured using twin-detector method and determined to be 0.69%, 1.2% and 1.94%, respectively. When used as an SA in an Er-doped fibre laser, the result showed pulse duration shortening; from 670 to 520 fs, as well as spectral broadening; from 4.22 to 6.73 nm. In addition, we also observed changes in repetition rate, output power and time-bandwidth product (TBP). The result of this paper shows the feasibility of controlling the modulation depth of a GO SA and conclusively shows the effect of modulation depth on ultrashort pulse. John Wiley & Sons, Inc 2021-02 Article PeerReviewed application/pdf en http://eprints.utm.my/96593/1/MohdAfiqIsmail2021_ReductionControlledGrapheneOxideSaturable.pdf Ismail, Mohd. Afiq and Abdul Razak, Mohd. Zulhakimi and Wadi Harun, Sulaiman and Hashim, Abdul Manaf (2021) Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser. IET Optoelectronics, 15 (1). pp. 61-68. ISSN 1751-8768 http://dx.doi.org/10.1049/ote2.12012 DOI:10.1049/ote2.12012 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Ismail, Mohd. Afiq Abdul Razak, Mohd. Zulhakimi Wadi Harun, Sulaiman Hashim, Abdul Manaf Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser |
| title | Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser |
| title_full | Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser |
| title_fullStr | Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser |
| title_full_unstemmed | Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser |
| title_short | Reduction-controlled graphene oxide saturable absorbers and its effect on ultrashort Er-doped fibre laser |
| title_sort | reduction controlled graphene oxide saturable absorbers and its effect on ultrashort er doped fibre laser |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/96593/1/MohdAfiqIsmail2021_ReductionControlledGrapheneOxideSaturable.pdf |
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