Zobrazeno 1 - 10
of 55
pro vyhledávání: '"T. Kamejima"'
Autor:
T. Nakamura, Satoru Suzuki, M. Shibata, H. Tosho, D. E. Sykes, K. Sasa, Y. Gao, I. Tachikawa, H. Koyama, T. Adachi, T. Tanigaki, T. Akai, Y. Shimanuki, H. Shichi, Masato Tomita, A. Masamoto, H. Matsunaga, M. Hirano, F. Tohjou, K. Okuno, Y. Yoshioka, T. Obata, M. Maier, H. Takase, K. Sasakawa, S. Matsumoto, Yoshikazu Homma, Satoru Kurosawa, T. Hirano, T. Kamejima, S. Sadayama, A. Ihara
Publikováno v:
Surface and Interface Analysis. 26:144-154
Round-robin studies on relative sensitivity factors (RSFs) in secondary ion mass spectrometry (SIMS) were conducted using bulk GaAs samples uniformly doped with various impurity elements. A total of 31 laboratories participated in two round-robins. M
Publikováno v:
The 2010 International Power Electronics Conference - ECCE ASIA.
This paper propose a new current control system for IPMSM to reduce harmonic currents caused by the overmoduration and a non-sinusoidal magnetic flux distribution on the rotor. The harmonic currents have problems with making a current control system
Publikováno v:
IEEE Journal of Quantum Electronics. 15:775-781
Extremely high optical power density emission was achieved with an AlGaAs "window structure" laser in CW operation as well as pulsed operation by increasing the threshold of the catastrophic optical damage (COD) on mirrors. A Zn diffused "window stri
Publikováno v:
Journal of The Electrochemical Society. 126:664-667
Publikováno v:
IEEE Journal of Quantum Electronics. 23:720-724
A new fabrication process has been successfully applied for the first time to the AlGaAs/GaAs laser diode. This new process includes vapor phase etching and subsequent MOVPE regrowth. Self-aligned LD's fabricated by this process have shown sufficient
Autor:
T. Kamejima, K. Ishida
Publikováno v:
Journal of Electronic Materials. 8:57-73
Dark spot defects in (GaAl)As-GaAs double heterostructure lasers are studied by transmission electron microscopy and found to be a cluster of dislocations generated in the first (GaAl)As epitaxial layer during epitaxial growth. Burgers vectors and sp
Publikováno v:
Applied Physics Letters. 36:655-657
Deep levels in (Al,Ga)As double‐heterostructure lasers have been studied by deep‐level transient spectroscopy during accelerated aging at junction temperatures in the 120–320 °C range. A marked correlation has been found between the concentrat
Publikováno v:
Applied Physics Letters. 40:16-17
Lattice defect structure of degraded InGaAsP lasers has been investigated by scanning and transmission electron microscopy. It is found that although dislocation climb motion in InGaAsP lasers is slow, slip dislocations parallel to the stripe cause r
Publikováno v:
Physics Letters A. 26:555-556
The polarization of the luminescence from the α-center in KI was observed at 4.2°K, and was interpreted as being due to the dynamical Jahn-Teller effect in the degenerate excited state.
Publikováno v:
Journal of Applied Physics. 50:5150
Degradation mechanism and the related change in lasing characteristics for a mirror degradation were investigated in AlGaAs double‐heterostructure lasers with uncoated mirror surfaces. In constant optical‐power operation, mirror degradation was c