Determination of internal parameters in blue InGaN laser diodes by the measurement of cavity-length dependent characteristics

Title
Determination of internal parameters in blue InGaN laser diodes by the measurement of cavity-length dependent characteristics
Authors
Ryu, H.Y.
Keywords
blue InGaN laser diodes, cavity-length
Issue Date
2008-07
Publisher
American Institute of Physics
Abstract
The characteristics of blue InGaN single-quantum-well laser diodes (LDs) emitting at 445 nm are investigated with varying cavity length of the LDs from 650 to 1450 m. From the measurement of cavity-length dependent slope efficiency, internal efficiency and internal loss of LD structures have been determined to be 0.89 and 10.5 cm−1, respectively, indicating good quality of the LD structure. In addition, gain parameters have been extracted from the relation of threshold current density and cavity length. It is found that the internal parameters of blue LDs are comparable to those of violet LDs emitting at 405 nm.
URI
http://dspace.inha.ac.kr/handle/10505/1530
ISSN
0003-6951
Appears in Collections:
College of Natural Science(자연과학대학) > Physics (물리학) > Journal Papers, Peports(물리학 학술논문, 보고서)
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