Second-harmonic generation in germanium-on-insulator from visible to telecom wavelengths
The second-order $\chi^{2}$ process underpins many important nonlinear optical applications in the field of classical and quantum optics. Generally, the $\chi^{2}$ process manifests itself only in a non-centrosymmetric dielectric medium via an anharmonic electron oscillation when driven by an in...
Saved in:
| Main Authors: | , , , |
|---|---|
| 其他作者: | |
| 格式: | Article |
| 語言: | English |
| 出版: |
2022
|
| 主題: | |
| 在線閱讀: | https://hdl.handle.net/10356/161231 |
| 標簽: |
添加標簽
沒有標簽, 成為第一個標記此記錄!
|
| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | The second-order $\chi^{2}$ process underpins many important nonlinear
optical applications in the field of classical and quantum optics. Generally,
the $\chi^{2}$ process manifests itself only in a non-centrosymmetric
dielectric medium via an anharmonic electron oscillation when driven by an
intense optical field. Due to inversion symmetry, group-IV semiconductors like
silicon (Si) and germanium (Ge) are traditionally not considered as ideal
candidates for second-order nonlinear optics applications. Here, we report the
experimental observation of the second-harmonic generation (SHG) in a
Ge-on-insulator (GOI) sample under femtosecond optical pumping. Specially, we
report the first-time measurement of the SHG signal from a GOI sample in the
telecom S-band by pumping at $\sim$$3000$ nm. |
|---|