6 results about "Dual frequency" patented technology

A metrology system may include a dual frequency comb source providing a first comb beam with a first repetition rate and a second comb beam with a second repetition rate, a beamsplitter to generate one or more dual frequency comb illumination beams from the first comb beam and the second comb beam, and a beam combiner to form a dual frequency comb illumination beam from the first comb beam and the second comb beam. The system may further include an illumination sub-system to illuminate a sample with the dual frequency comb illumination beam through an objective lens, a collection sub-system to collect sample light from the sample with the objective lens, and a detector to capture a radio-frequency signal based on the sample light. The system may further extract spectral measurement data associated with the sample from the radio-frequency signal and generate metrology measurements based on the spectral measurement data.

1. The name of the design product: transceiver integrated machine (KA / KU dual frequency). 2. The use of the design product: for satellite signal reception and transmission. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application provides a dual-frequency navigation glass antenna and a communication system, which comprises a composite glass substrate, a ground plane provided with a transmission channel, a microstrip feed line corresponding to the transmission channel, and a radiation mechanism with an included angle between the length direction and the first direction within a preset range, the radiation mechanism comprising two low-frequency patches and two high-frequency patches, the high-frequency patches and the low-frequency patches being staggered and arranged in a center-symmetrical structure, the low-frequency patches being provided with parallel grooves and orthogonal grooves arranged perpendicularly to each other, and the extension direction of the adjusting grooves being parallel to the extension direction of the orthogonal grooves. The application solves the defects of narrow bandwidth, large gain fluctuation and weak signal reception in part of the frequency band of the traditional navigation antenna, and realizes the synergistic optimization of the dual-frequency performance, the integrated reliability and the signal reception quality.

The present disclosure provides a method comprising the step of generating, by means of a dual frequency comb source, a first optical frequency comb having a first repetition rate and a second optical frequency comb having a second repetition rate different from the first repetition rate. The method comprises the step of using one or more optical elements to orient one or more of the first optical frequency comb or the second optical frequency comb toward a material. The method comprises the step of using a diode photodetector to detect optical signals from the first optical frequency comb and the second optical frequency comb after one or more of the first optical frequency comb or the second optical frequency comb have interacted with the material. The method comprises the step of using a diode photodetector to generate radio frequency signals corresponding to the optical signals. The method comprises the step of determining the thickness of the material based on the radio frequency signals.

The invention discloses a double-shaft single-cavity double-frequency laser generating device in the field of laser generating devices, and the device comprises a pump laser which is used for emitting a laser beam; the reflection separation device is arranged at the light output end of the pump laser; the prismatic dichroscope is arranged at the light output end of the reflection separation device, and the prismatic dichroscope is used for generating two axes in the same resonant cavity so as to generate two spatially separated laser oscillation modes; the etalon comprises a first etalon and a second etalon; an output coupling mirror; the invention further discloses a double-shaft single-cavity double-frequency laser generating method. Compared with the prior art, the invention has the beneficial effects that the two etalon independently select modes, the frequency adjustment is flexible, the operation is simple, the loss in the cavity is small, and the single-cavity common-mode noise is low.