Two-Colour Nonlinear Amplification for Mid-infrared Generation by Difference Frequency Generation
| dc.contributor.author | Laketa, Samuel Slavko | |
| dc.date.accessioned | 2024-01-16T13:53:59Z | |
| dc.date.available | 2024-01-16T13:53:59Z | |
| dc.date.issued | 2024-01-16 | |
| dc.date.submitted | 2024-01-11 | |
| dc.description.abstract | In this thesis, I discuss the development of a two-colour laser system which uses an all-normal dispersion fiber laser in combination with a gain-managed nonlinear amplifier as its broadband source. The goal is to develop a two-colour laser which can be used for mid-infrared generation through difference frequency generation. Most molecules contain characteristic absorption features in the mid-infrared ”molecular fingerprint” region from 3 - 20 μm. Our goal is to create a high power laser that can access as much of these wavelengths as possible. This requires a wide wavelength separation between colours, along with broad bandwidths in each colour, while attaining high pulse energies. This work shows the use of nonlinear amplification of a two-colour seed in an Yb:fiber in order to combat gain narrowing and maintain broad wavelengths in the two colours through self-phase modulation. Many different experimental setups were implemented, which will be presented, with the most successful results being achieved with the use of a large-mode- area Yb:fiber. We demonstrate a two-colour laser source with colours centered at 1070 nm and 1120 nm with individual bandwidths of 30 nm and 21 nm respectively. This two-colour spectrum was amplified up to a total power of 6.76 W, with a repetition rate of 9.67 MHz, corresponding to a total pulse energy of 700 nJ. | en |
| dc.identifier.uri | http://hdl.handle.net/10012/20235 | |
| dc.language.iso | en | en |
| dc.pending | false | |
| dc.publisher | University of Waterloo | en |
| dc.title | Two-Colour Nonlinear Amplification for Mid-infrared Generation by Difference Frequency Generation | en |
| dc.type | Master Thesis | en |
| uws-etd.degree | Master of Science | en |
| uws-etd.degree.department | Physics and Astronomy | en |
| uws-etd.degree.discipline | Physics | en |
| uws-etd.degree.grantor | University of Waterloo | en |
| uws-etd.embargo.terms | 0 | en |
| uws.contributor.advisor | Strickland, Donna | |
| uws.contributor.affiliation1 | Faculty of Science | en |
| uws.peerReviewStatus | Unreviewed | en |
| uws.published.city | Waterloo | en |
| uws.published.country | Canada | en |
| uws.published.province | Ontario | en |
| uws.scholarLevel | Graduate | en |
| uws.typeOfResource | Text | en |