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Thermo-optical tuning of whispering gallery modes in Er:Yb co-doped phosphate glass microspheres
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ward, Jonathan Michael Chormaic, Síle Nic |
| Copyright Year | 2010 |
| Abstract | We demonstrate an all-optical, thermally assisted technique for broad-range tuning of whispering gallery modes in microsphere resonators fabricated from an Er:Yb co-doped phosphate glass (IOG-2). The microspheres are pumped at 978 nm and the heat generated by absorption of the pump expands the cavity, thereby altering the cavity size and refractive index. We demonstrate a significant nonlinear tuning range of greater than 700 GHz of both C- and L-band cavity emissions via pumping through a tapered optical fibre. Finally, we show that large linear tuning up to ∼488 GHz is achievable if the microsphere is alternatively heated by coupling laser light into its support stem. |
| Starting Page | 847 |
| Ending Page | 850 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s00340-010-4153-0 |
| Volume Number | 100 |
| Alternate Webpage(s) | https://cora.ucc.ie/bitstream/handle/10468/325/JMW_ThermoAV2010.pdf?isAllowed=y&sequence=3 |
| Alternate Webpage(s) | https://doi.org/10.1007/s00340-010-4153-0 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
