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The ultrafast laser inscription of photonic devices for integrated optical applications
| Content Provider | Semantic Scholar |
|---|---|
| Author | Beecher, Stephen J. |
| Copyright Year | 2012 |
| Abstract | A study of some key areas in which ultrafast laser inscription may usefully be employed is presented. The thesis includes waveguide inscrip tion in a variety of substrates including passive glass, doped glass and a nonlinea r crystal. The work contained can be split into three studies, with some overlap between th m. Firstly fused silica glass is used, both in planar substrates and as flat fibre, for the inscription of two sensing elements. The planar sub strate is used for a device similar in design to a side-polished fibre and the flat fibre is used for the fabrication of a Bragg grating waveguide array. In the second study, waveguides are inscribed in th e nonlinear crystal monoclinic bismuth borate, and used for guided mode second har monic generation. A novel waveguide design is employed to increase overlap be tween the pump and second harmonic waveguide modes. The remainder of the thesis investigates the applic abi ty of ultrafast laser inscription to the fabrication of compact modelocked lasers. Lasin g is demonstrated, both continuous wave and modelocked, using a laser inscribed erbium doped bismuthate glass waveguide as the gain element. A study is then unde rtaken into methods of integrating carbon nanotubes, used as saturable absorbers to mo delock lasers, into laser inscribed waveguides. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ros.hw.ac.uk/bitstream/handle/10399/2553/BeecherSJ_0512_eps.pdf;sequence=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
