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Efficient combining of optical power from three input optical fibers to a single trunk fiber is demonstrated using fibers of different core/cladding diameters in a biconical taper configuration. The combiners have insertion loss less than 1 dB and optical isolation greater than −50 dB.
Fast growth and total formation of platinum silicide can be obtained by using a chromium, silicon nitride, or sputtered silicon film to protect the platinum from the unfavorable effects of small amounts of oxygen contained in the furnace during annealing. X‐ray diffraction and Rutherford...
A dose dependence in the effectiveness of a two‐step annealing procedure for As‐implanted 〈111〉 silicon has been observed. The upper limiting dose for which two‐step annealing is more effective than a single‐step 900 °C anneal is ∼2×10 15 As/cm 2 . Increasing the annealing...
A neodymium‐phosphate glass oscillator mode locked using the saturable absorber dye No. 3955 in a plastic host has been shown to give completely modulated outputs. Single pulses of duration ∼5 psec with the low background have been obtained, when operating close to threshold. The aperature...
Experiments in the 3‐GHz region are reported for oblique incidence of magnetostatic forward volume waves (MSFVW) on an 8‐period uniform metallic grating of 140 μm periodicity. The MSFVW propagate in a 25‐μm‐thick epitaxial yttrium iron garnet film under normal magnetic bias. Insertion...
The spectral characteristics, temporal gain profile, and saturation energy have been measured for the 353‐nm XeF laser line using a picosecond probe pulse of the third harmonic of a Nd : glass laser.
Investigation of TE discharges in a 1.6‐mm square channel has revealed reasons for the inefficient operation of such devices as CO 2 oscillators. At high repetition rates the pulsed glow discharges are not wall confined above 100 Torr. Thus wall cooling and complete volumetric excitation are...
The electrical and optical properties of rf‐sputtered Sn‐doped In 2 O 3 (ITO) films have been found to depend strongly on the O 2 partial pressure during deposition. For the sputtering conditions used, films with both low electrical resistivity (ρ ∼ 3 × 10 −4 Ω cm) and high visible...
An unbiased Josephson tunnel junction, irradiated with microwaves, can spontaneously develop quantized dc voltages. We explain this effect with reference to the shunted junction model and to analog experiments. This effect may be utilized to significantly improve both the accuracy and the...
A new device for the absolute calibration of cells for photoacoustic spectroscopy is described. Experimental results for a particular cell are reported.
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