Electrically driven nanoisland laser platform = 전기 구동 나노섬 레이저 플랫폼

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As the data traffic continues to increase, lots of energy is consumed at metal wires. To overcome the energy issue, research is continuing on how to connect electronic chips with light. This requires an energy efficient laser source. From such a point of view, photonic crystal lasers have attracted great attention. However, it was limited in reducing energy consumption due to horizontally uniform active media. If one can reduce the active medium size efficiently, the performance of electronic integrated circuits will be greatly improved. In this work, we introduced a nanoisland laser which is capable of controlling the size of the active medium. The nanoisland was placed in a photonic crystal resonator using selective QW etching techniques. To form a photonic circuit, we demonstrated a SAW waveguide coupled nanoisland laser. More than 60% of light was extracted through the waveguide. Next, we proposed an electrically driven nanoisland laser platform. The proposed structure has a thin air layer between the vertical InP slabs, which acts as an insulator so that electrons and holes can be effectively injected into the nanoisland. However, the air layer was collapsed during the fabrication processes. So, we developed a method to realize a mechanically stable structure by photoresist filling.
Advisors
Rotermund, Fabianresearcher이상민researcher
Description
한국과학기술원 :물리학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 물리학과, 2019.2,[vii, 84 p. :]

Keywords

Selective QW etching▼aNanoisland QW▼aPhotonic crystal▼aOptical pumping▼aElectrical Pumping▼aWaveguide coupled nanoisland laser▼aNanoisland laser platform▼aPhotoresist filling; 선택적 양자 우물 식각▼a나노섬 양자우물▼a광결정▼a광펌핑▼a전기펌핑▼a광도파로 결합된 나노섬 레이저▼a나노섬 레이저 플랫폼▼a포토레지스트 충전

URI
http://hdl.handle.net/10203/264662
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=842038&flag=dissertation
Appears in Collection
PH-Theses_Ph.D.(박사논문)
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