A Novel Intra-Cavity Lens Design for Compact High Efficiency Tapered Laser Diodes
An integrated parabolic lens capable of introducing a diverging effect to the optical mode propagating within the cavity of a tapered laser is proposed and demonstrated. This idea allows broader high-power beams to be generated by shorter cavities. Diverging lenses with etch depths of 0.13 and 0.27...
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| Main Authors: | , , , , , |
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| 格式: | text |
| 語言: | English |
| 出版: |
Institutional Knowledge at Singapore Management University
2007
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| 主題: | |
| 在線閱讀: | https://ink.library.smu.edu.sg/lkcsb_research/3339 https://ink.library.smu.edu.sg/context/lkcsb_research/article/4338/viewcontent/Novel_Intracavity_Lens_2007.pdf |
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| 總結: | An integrated parabolic lens capable of introducing a diverging effect to the optical mode propagating within the cavity of a tapered laser is proposed and demonstrated. This idea allows broader high-power beams to be generated by shorter cavities. Diverging lenses with etch depths of 0.13 and 0.27 mum are implemented, with 12 (9.5%) and 16.8 mum (13.3%) overall broadening of the near-fields widths measured at 1/e2 intensity. The peak output power as well as the threshold current is found to increase following the lens etching process, confirming the beneficial broadening effect introduced by the diverging lens. |
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