Beam engineering of quantum cascade lasers
This paper reviews beam engineering of mid-infrared and terahertz quantum cascade lasers (QCLs), based on two approaches: designer plasmonic structures and deformed microcavities. The plasmonic structures couple laser emission into surface waves and control the laser wavefront in the near-field, the...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/84918 http://hdl.handle.net/10220/17545 |
| _version_ | 1811691755385389056 |
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| author | Yu, N. Wang, Q. Capasso, F. |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Yu, N. Wang, Q. Capasso, F. |
| author_sort | Yu, N. |
| collection | NTU |
| description | This paper reviews beam engineering of mid-infrared and terahertz quantum cascade lasers (QCLs), based on two approaches: designer plasmonic structures and deformed microcavities. The plasmonic structures couple laser emission into surface waves and control the laser wavefront in the near-field, thereby greatly increasing beam collimation or introducing new functionalities to QCLs. The plasmonic designs overall preserve laser performance in terms of operating temperature and power output. The deformed microcavity QCLs operate primarily on whispering-gallery modes, which have much higher quality factors than other modes, leading to lower threshold current densities. Cavity deformations are carefully controlled to greatly enhance directionality and output power. |
| first_indexed | 2024-10-01T06:24:56Z |
| format | Journal Article |
| id | ntu-10356/84918 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:24:56Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/849182020-03-07T13:56:09Z Beam engineering of quantum cascade lasers Yu, N. Wang, Q. Capasso, F. School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics This paper reviews beam engineering of mid-infrared and terahertz quantum cascade lasers (QCLs), based on two approaches: designer plasmonic structures and deformed microcavities. The plasmonic structures couple laser emission into surface waves and control the laser wavefront in the near-field, thereby greatly increasing beam collimation or introducing new functionalities to QCLs. The plasmonic designs overall preserve laser performance in terms of operating temperature and power output. The deformed microcavity QCLs operate primarily on whispering-gallery modes, which have much higher quality factors than other modes, leading to lower threshold current densities. Cavity deformations are carefully controlled to greatly enhance directionality and output power. 2013-11-08T08:45:31Z 2019-12-06T15:53:36Z 2013-11-08T08:45:31Z 2019-12-06T15:53:36Z 2012 2012 Journal Article Yu, N., Wang, Q., & Capasso, F. (2012). Beam engineering of quantum cascade lasers. Laser & photonics reviews, 6(1), 24-46. 1863-8880 https://hdl.handle.net/10356/84918 http://hdl.handle.net/10220/17545 10.1002/lpor.201100019 en Laser & photonics reviews |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Yu, N. Wang, Q. Capasso, F. Beam engineering of quantum cascade lasers |
| title | Beam engineering of quantum cascade lasers |
| title_full | Beam engineering of quantum cascade lasers |
| title_fullStr | Beam engineering of quantum cascade lasers |
| title_full_unstemmed | Beam engineering of quantum cascade lasers |
| title_short | Beam engineering of quantum cascade lasers |
| title_sort | beam engineering of quantum cascade lasers |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics |
| url | https://hdl.handle.net/10356/84918 http://hdl.handle.net/10220/17545 |
| work_keys_str_mv | AT yun beamengineeringofquantumcascadelasers AT wangq beamengineeringofquantumcascadelasers AT capassof beamengineeringofquantumcascadelasers |