نتایج جستجو برای: flatness
تعداد نتایج: 2802 فیلتر نتایج به سال:
Since for medium and larger objects there is no usable flatness reference in the sub-micron range, flatness deviations must be found from straightness measurements. The extensive task o f coupling the straight reference lines into a reference f lat is done using a computer. This simplifies the measuring procedure and offers much statistical information. The method described can be seen as a gen...
A simple and cost-effective technique for generating a flat, square-shaped multi-wavelength optical comb with 42.6 GHz line spacing and over 0.5 THz of total bandwidth is presented. A detailed theoretical analysis is presented, showing that using two concatenated modulators driven with voltages of 3.5 V(pi) are necessary to generate 11 comb lines with a flatness below 2dB. This performance is e...
Absolute flatness of three silicon plane mirrors have been measured by a three-intersection method based on the three-flat method using a near-infrared interferometer. The interferometer was constructed using a near-infrared laser diode with a 1,310-nm wavelength light where the silicon plane mirror is transparent. The height differences at the coordinate values between the absolute line profil...
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