Study of laser diodes using quantum wells with small disturbance structure
碩士 === 國立彰化師範大學 === 電子工程學系 === 99 === A small disturbance structure has been added to the quantum well of laser diodes. The laser characteristics such as threshold current and gain spectrum have been studied by numerical simulation. First, a small spike is added in each identical quantum wells. An i...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/68327612733787244476 |
| Summary: | 碩士 === 國立彰化師範大學 === 電子工程學系 === 99 === A small disturbance structure has been added to the quantum well of laser diodes. The laser characteristics such as threshold current and gain spectrum have been studied by numerical simulation. First, a small spike is added in each identical quantum wells. An increased threshold current and a blue shift in lasing wavelength are observed. The small disturbance is also employed in asymmetric quantum wells. Carrier distribution among wells of different width is more even and a wide and smooth gain spectrum can be achieved.
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