36results about How to "Improve oscillation efficiency" patented technology

A nitride semiconductor laser diode has a quantum well layer consisting of a mixed crystal of Al_x1In_y1Ga_1-x1-y1N (x1≧0.5, y1≧0 and 1−x1−y1≦0.5) in a group III nitride semiconductor multilayer structure having a major growth surface defined by a nonpolar plane. A cavity direction of the laser diode is perpendicular to a c-axis. The major growth surface of the group III nitride semiconductor multilayer structure may be defined by an m-plane. In this case, the cavity direction may be along an a-axis.

There is provided a semiconductor laser pumped solid-state laser device for engine ignition that can stably provide optical energy required for ignition across a wide temperature range. In the semiconductor laser pumped solid-state laser device for engine ignition, a plurality of semiconductor lasers 21, 22, 23, and 24 are used that have locking ranges, a temperature width thereof divided into a plurality of temperature ranges corresponding to a variation width of an ambient temperature, and that have the respective wavelengths falling within an absorption wavelength band of a solid-state laser medium 5 of the solid-state laser device in the temperature width of each locking range, to pump the solid-state laser medium 5 by multiplexing emitted lights from the plurality of semiconductor lasers 21, 22, 23, and 24 using a multiplexing mechanism to irradiate the solid-state laser medium 5.

The invention discloses a chemical reagent oscillator which comprises a box body, wherein the box body is of a hollow structure opened in the top; a supporting block is arranged at the center of the box body; a plurality of uniformly distributed test tube placing holes are formed in the top of the supporting block; a fixing bar and a first convex rod are symmetrically arranged on the two side walls of the supporting block; a chute matched with the fixing bar is formed in the inner wall in one side of the box body; the end, far from the supporting block, of the fixing bar is inserted into the chute, and the fixing bar is connected to the chute in a sliding manner; a first spring is fixedly connected to the bottom of the chute; the end, far from the bottom of the chute, of the first spring is fixedly connected to the fixing bar; the first convex rod penetrates through the side wall of the box body, and the first convex rod is slidably connected to the side wall of the box body; a fixingplate is arranged on the side wall of the box body; and a first driving motor is fixedly connected to the fixing plate. The chemical reagent oscillator disclosed by the invention is simple in structure and convenient to operate, improves the oscillating efficiency of a chemical reagent and improves the oscillating effect of the chemical reagent.

A compact and inexpensive laser apparatus capable of obtaining laser beams of multiple wavelengths from a single solid crystal at the same time and excelling in reliability and efficiency is to be provided. A laser apparatus 1 uses a solid crystal consisting of a Raman effect substance as a laser medium 10, and is equipped with a laser oscillator 12 for exciting the laser medium 10 to generate laser beams, a reflector 16, a laser output mirror 18, for resonating the laser beam generated from the laser medium 10 and a harmonic element 22 for enabling by angle adjustment a single wavelength to be extracted out of multiple oscillation wavelengths.

The invention discloses a vertical pulse type electric vibrating and screening machine and a use method thereof. The vertical pulse type electric vibrating and screening machine comprises a supporting frame, a square fixing frame, a vertical pulse driving device and a vibrating and screening device. The square fixing frame is arranged in the supporting frame and fixedly connected with the supporting frame through a plurality of elastic parts. A vertical rack is arranged on the top of the square fixing frame, an incomplete gear engaged with the rack is arranged on the upper portion of the supporting frame, and the incomplete gear, the rack and the elastic parts form the vertical pulse driving device together. The vibrating and screening device and the square fixing frame form an integrated structure and perform periodic vertical pulse movement under the action of the vertical pulse driving device. By the adoption of the structure and the method, screening and vibrating functions can be achieved at the same time, a screen can be prevented from being blocked, and the efficiency of the screen is improved; vibrated samples can be quickly and fully mixed, so that the vibrating efficiency is improved; multiple screening functions can also be achieved through combination of different screens, so that the screening or vibrating effect is improved.

Disclosed herein is a domestic injection-type ultrasonic washing apparatus comprising an oscillator module and an injector module. The oscillator module includes an oscillation circuit unit provided with various elements to generate electric vibration, ultrasonic vibrators located underneath the oscillation circuit unit and electrically connected to the oscillation circuit unit to convert the electric vibration to mechanical vibration, and a radiation plate having vibrator seating openings. The injector module includes a raw water inlet portion, a fluid passage housing having an inner fluid passage to allow inlet raw water to pass while coming into contact with the radiation plate, and injection nozzles to ultrasonically vibrate and inject the raw water. The washing apparatus achieves reduction in the size thereof, and ease of assembly, repair and exchange of damaged modules. Also, the washing apparatus shows improved radiation effect and uniform supply of wash water.

In a magnetron 41, when a radius of a flat portion 45b of a pole piece 45 is Rp, a radius of the inner circumference of a large-diameter equalizing ring 51 is Rs2, Rp≧Rs2, a radius of the outer circumference of a small-diameter equalizing ring is Rs1, a radius of a circle inscribed in a leading edge of an anode vane is Ra, and a minimum length between the pole pieces in the axial direction is Lg, the values of Ra, Rs1, Rs2, and Lg are set such that the following Expressions 1 and 2 are established:

1.85Ra≦(Rs1+Rs2)/2≦1.96Ra,  [Expression 1]

and

2.84Ra≦Lg≦3.0Ra.  [Expression 2]

It is an object of the present invention to provide a copper-containing silica glass which emits fluorescence having a peak in a wavelength range of from 520 nm to 580 nm under irradiation of ultraviolet light with a wavelength of 400 nm or less, and which is excellent in long term stability even in the high output use.

The copper-containing silica glass is made to have copper of from 5 wtppm to 200 wtppm, which emits fluorescence having a peak in a wavelength range of from 520 nm to 580 nm under irradiation of ultraviolet light with a wavelength ranging from 160 nm to 400 nm, and in which an internal transmittance per 2.5 mm thickness at a wavelength of 530 nm is 95% or more.

A VCO system embodying the features of the present invention includes a frequency tuning circuit, a modulation circuit coupled in a parallel fashion with the frequency tuning circuit, a band tuning circuit coupled with the frequency tuning circuit in a parallel fashion having at least one switching circuit, a core circuit coupled with the frequency tuning circuit, the modulation circuit, and the band tuning circuit, wherein upon asserting a switching signal and upon adjusting a frequency turning signal, a frequency tuning bias signal, and a band tuning signal, the switching circuit is enabled for configuring the band tuning circuit to join the frequency tuning circuit for adjusting a predetermined output frequency based on a total inductance and a total capacitance provided by the core circuit, the frequency tuning circuit, the modulation circuit and the band tuning circuit.

A method for manufacturing an optical fiber grating that includes first and second gratings that configure an optical resonator, the method including: forming the first grating by radiating ultraviolet light to an optical fiber so that a irradiation intensity Z satisfies the following Equation 1: Z≦(Δλ_S/x+0.04556 Y²+1.2225 Y)/(0.05625 Y²+1.6125 Y) . . . Equation 1, where, Z represents an irradiation intensity (mJ/mm²) of the ultraviolet light, Δλ_S represents the maximum shift amount of a reflection center wavelength of the first grating that is allowed as long as reflection wavelengths of the first grating and second grating overlap each other, x represents a shift amount of the reflection center wavelength per temperature change of 1° C. (nm/° C.) in the first grating, and Y represents an intensity (W) of the wave-guided light.