The OPO's tuning ranges at the doubly and singly resonant forms tuned with temperature were 844.l-1411.3nm and 738.9-1032.2nm and the minimum pump thresholds were 0.22mJ/pulse and 0.66mJ/pulse, respectively.

When the input signal and the first control wavelengths are kept at 1554.2 nm and 1532.5 nm,respectively,the output signal wavelength can be tuned from 1536.0 nm to 1545.2 nm as the second control wavelength is varied from 1550.5 nm to 1541.0 nm.

When the domain period changed from 30.2 μm to 30.8 μm with increment of 0.2 μm at each step,the signal output can be continuously tuned 1.51～1.58 μm by elevating temperature 20～100 ℃.

A control analysis model based on structural response of the Multiple Tuned Mass Damper(MTMD), and an optimization method to realize the parameter design of the system of MTMD are proposed in this paper,which aims to achieve the purpose of reducing vibration of a mechanical structural system.

Based on the transfer functions between the structure installed with multiple tuned mass dampers(MTMD) and the MTMD,the dynamic magnification factors of both the structure and MTMD are defined.

The catalytic oxidative performance of Mg-Al-Ru-CO3 hydrotalcite,Co-Al-Ru-CO3 hydrotalcite, Ru-Co(OH)2-CeO2 was well designed and tuned with substitution method.

Sodium vapor was excited by a cw dye laser, tuned±20GHz from the D2 resonance line. Cross section for the excitation transfer process Na(3P) + Na (3P)→Na(4F) + Na(3S) was measured.

The proof relies on a family of inversion formulas for the Segal-Bargmann transform, which can be "tuned" to give the best estimates for a given value of p.

The most important feature of the proposed scheme lies in that it can be explicitly tuned with a single parameter for the trade-off between performance and stability of the AQM control system.

The variables of the main module of a servo system for miniature reconfigurable parallel mechanism were identified and automatically tuned.

The multiple tuned mass damper (MTMD) system is applied to control vertical bending buffeting response.

A new semiactive lever-type tuned mass damper (TMD) with an adjustable frequency is proposed to control vertical bending buffeting and torsional buffeting and flutter in the whole velocity range of bridge decks.

In this article the parametrically coupling of oscillations in a small ellipsoid of ferrite under the excitation of an uhf pumping of any spatial distribution is discussed. It is pointed out that the coupled oscillations may be induced through the two types of driving, field driving and magnetization driving. A special case of the former was recently discovered by Denton, who used a longitudinal pumping field uniform in space. A special example of the latter is found in Suhl's theoretical analysis and a number...

In this article the parametrically coupling of oscillations in a small ellipsoid of ferrite under the excitation of an uhf pumping of any spatial distribution is discussed. It is pointed out that the coupled oscillations may be induced through the two types of driving, field driving and magnetization driving. A special case of the former was recently discovered by Denton, who used a longitudinal pumping field uniform in space. A special example of the latter is found in Suhl's theoretical analysis and a number of experimental works after him. The pumping field transverse in direction and spatially uniform does not induce the coupled oscillations directly, but the rf magnetization of the Kittel precession excited by the pumping becomes the driving force of the oscillations. For each type of a uniform pumping we obtain from a set of differential equations the magnetostatic potential functions (the first order approximation) as linear combinations of Walker's functions. These solutions are different from those given by MOHOCOB. Making. use of the boundary conditions at the ferrire surface we find that for the Walker modes involved in the oscillations to be coupled, thtir indices must satisfy certain condi'ions. For the case of magnetostatic operations the dc magnetic field is tuned to a pair of the Walker modes, the potential functions may be reduced greatly. By studying the power drawn by the coupled oscillations from the pumping, we obtain the selection rules of a pair of magnetostatic modes excited by a pumping field of any given spatial distribution. We point out that for the determination of the amplitudes of the oscillations the equations derived from the conservation of energy and from the equality of the number of quanta emitted must be used. Finally, the threshold intensity of Denton's pumping field is derived using Suhl's method. We indicate that this method is based on a perturbation calculation.

Some supplementations, unifications, and simplifications of the problem of optimum band-width of a filter approximately matched to high-frequency pulsed signal were made in this paper.For a filter approximately matched to a single rectangular high-frequency pulse, the case for a linear system with rectangular freguency characteristic detuned with respect to the rectangular high-frequency signal was discussed and the formula for calculating the optimum band-width of the system was obtained.For the case of pulse...

Some supplementations, unifications, and simplifications of the problem of optimum band-width of a filter approximately matched to high-frequency pulsed signal were made in this paper.For a filter approximately matched to a single rectangular high-frequency pulse, the case for a linear system with rectangular freguency characteristic detuned with respect to the rectangular high-frequency signal was discussed and the formula for calculating the optimum band-width of the system was obtained.For the case of pulse trains with uniform amplitudes, simplification and unification of some results of the other authors were made, it was pointed out that there exists a simple relation between the optimum value of attenuation of the delayed feedback system with unlimited band-width and the optimum teeth-width of a comb filter with single-tuned characteristic of the teeth. The comparison between these two systems was made by the use of the data of the other authors.For the case of rectangular pulse trains with non-uniform amplitudes, the accumulation of the rectangular pulse trains with trapezoidal envelope by the delayed feedback system with finite bandwidth was discussed, and formula of the signal to noise ratio at the output terminals was obtained. For finding the optimum bandwidth of the delayed feedback system, some numerical calculations were made, and curves of the signal to noise ratio with respect to the band-width were plotted. From these curves we found that in this case there exists an optimum band-width of the system, the value of which is wider then the optimum band-width of the system in the case of accumulation of rectangular pulse trains with uniform amplitudes.

This paper describes a design method of multi-stage transistor intermediate frequency wide band amplifier. The feature of design is the use of network synthesis technique for realizing the amplifier with Tschebyscheff or maximal flatness frequency characteristics. The amplifier itself consists of a cascade of RC neutralized common-emitter stages each with primary tuned interstage transformer. The discussion is divided into three parts. First, the neutralized common-emitter stage is represented by approximate...

This paper describes a design method of multi-stage transistor intermediate frequency wide band amplifier. The feature of design is the use of network synthesis technique for realizing the amplifier with Tschebyscheff or maximal flatness frequency characteristics. The amplifier itself consists of a cascade of RC neutralized common-emitter stages each with primary tuned interstage transformer. The discussion is divided into three parts. First, the neutralized common-emitter stage is represented by approximate unilateral equivalent circuit. Second, the interstage network is analyzed. Expressed the transistor amplifier power gain as a prescribed frequency function, it is possible to derive the limiting constraints for resonant frequencies and Q values of interstage networks, and subsequently to obtain values of circuit elements. These resonant frequencies of interstage networks are not tuned to the center frequency, but distributed at certain frequencies of the transmission band. Finally one design example is presented.