4 results about "Laser technology" patented technology

The invention discloses a novel microchip laser supporting optical fiber output, which belongs to the fields of laser technology and non-linear optics. The novel microchip laser mainly comprises a laser diode pumping source, an optical fiber output system, an optical collimation system, a laser light gain medium and optical elements, wherein pump light enters the optical collimation system for collimating after passing through the optical fiber output system, and is focused onto the gain medium; the film-plated optical elements are arranged in front of and behind the gain medium; the gain medium and the film-plated optical elements in front of and behind the gain medium construct a laser resonant cavity with a sandwich structure; laser light generated by the laser resonant cavity returns along the incident direction of the pump light, passes through the optical collimation system once again, and is output through the optical fiber output system. The novel microchip laser has the characteristics that optical fiber output is performed during the use of an optical fiber pump without any additional output device in a sandwich microchip structure, and a fiber-core pump or a cladding pump can be adopted, so that the flexibility of a system is improved greatly; and meanwhile, the structure can also be applied to pulse modulation of materials such as semiconductor saturable absorbing mirrors, single-wall carbon nanotubes or graphene and the like, and stable pulse output is realized.

The invention discloses an online monitoring system for a sulfur hexafluoride switch. The online monitoring system comprises a first gas sampling device which is connected with a sulfur hexafluoride switch to be detected by a gas fetching pipe, wherein the gas fetching pipe is provided with a gas fetching valve; the gas sampling device is connected with a laser gas analyzer by an optical fiber. The online monitoring system for the sulfur hexafluoride switch comprises the gas sampling device which is connected with the sulfur hexafluoride switch to be detected by the gas fetching pipe; the gas sampling device is connected with the laser gas analyzer by the optical fiber; the operated SF6 switch is monitored by monitoring and analyzing the concentration of SF6 gas in the operated SF6 switch. The monitoring system adopts a laser technology to monitor the concentration of the gas, is simple in structure and is low in cost; meanwhile, the monitoring accuracy is improved.

The present invention relates to laser technology and nonlinear optical field, and provides an all-fiber femtosecond laser aiming at the shortcomings of existing lasers such as average output power, low peak power, high mode-locking threshold, wide pulse or complex structure. The laser includes pump light source, wavelength division multiplexer, gain fiber, low dispersion small mode field nonlinear fiber, polarization beam splitter, band pass filter and polarization controller. The mode field diameter of low dispersion small mode field nonlinear optical fiber is <= 4. 2 [mu]m; The bandpass filter comprises a polarization dependent isolator, a polarization maintaining fiber and a polarizer. Polarization-dependent isolator fused to the polarized optical axis of the polarization-maintaining optical fiber at an angle of 45 DEG; A wavelength division multiplexer, a gain optical fiber, a low dispersion small mode field nonlinear optical fiber, a polarization beam splitter, a polarization dependent isolator, a polarization maintaining optical fiber and a polarizer are sequentially connected to form an all optical fiber ring cavity; A polarization controller is located between the polarization beam splitter and the polarization dependent isolator and/or between the polarizer and the wavelength division multiplexer.

The invention discloses a manufacturing method of a cover plate with the semi-transparent effect. The cover plate is applied to a display device. The manufacturing method comprises the following steps: S1, providing a transparent substrate; S2, forming an ink layer on the surface of the transparent substrate; and S3, forming a semi-transparent pattern on the ink layer through the laser technology,when the display device is lightened, keeping the semi-transparent pattern in the light-pervious state, and when the display device is turned off, the semi-transparent pattern realizing a hiding effect. According to the manufacturing method, the ink layer is arranged on the surface of the transparent substrate, the corresponding semi-transparent pattern is formed on the ink layer by adopting thelaser technology, and the cover plate at other areas is not light-pervious, so that when the manufactured cover plate is used for the display device, the cover plate is observed to see the pattern only when the display device is lightened and has the semi-transparent visual effect; and when the display device is turned off, the cover plate forms an excellent and integrated visual effect, and the visual effect of hiding the semi-transparent pattern is displayed.