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A Zn diffusion stripe laser is fabricated by the metalorganic chemical vapour deposition and the open-tube, two-step, solid-phase diffusion technique. The threshold current is 9.4 mA and the lasing wavelength is 780 nm at 20 degrees C. The laser operates in the fundamental transverse mode and the astigmatic distance is less than 1 mu m. The laser has operated for over 1000 h at 60 degrees C with a...
A finite-element analysis is presented for reflection of the fundamental symmetric Lamb wave at the free edge of a semi-infinite elastic plate. It is shown that the edge resonance phenomenon is very sensitive to the value of Poisson's ratio. For a smaller value of Poisson's ratio, this phenomenon occurs at a lower frequency and the solutions vary more rapidly with frequency.
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