Free-form surface focusing lens based on rubidium spectrum lamp

Abstract

The invention discloses a free-form surface focusing lens based on a rubidium spectrum lamp, and the free-form surface focusing lens based on the rubidium spectrum lamp can be widely used in the fieldof atomic light frequency scale based on the rubidium spectrum lamp, for example, be used in an optical path of systems, such as an atomic clock, an atomic magnetometer and an atomic gyroscope. Rubidium spectrum lamp light is received through a hemispherical surface, one free-form surface performs total reflection on incident edge light to make the edge light go into a photoelectric detector, theother free-form surface performs refraction on incident central light to make the incident central light be focused on the photoelectric detector, thus, the central light of the rubidium spectrum lamp can be focused, and the edge light emitted by the rubidium spectrum lamp also can be focused through a total reflection principle, consequently, effective luminous energy of the rubidium spectrum lamp, participating in atom effect, is improved, and tests show that luminous energy received on the detector can be improved more than 8 times.

Description

technical field [0001] The invention belongs to the technical field of atomic optical frequency standards, and in particular relates to a free-form surface focusing lens for a rubidium spectrum lamp. Background technique [0002] Because the luminous form of the rubidium spectrum lamp does not have the collimation of the laser, but a divergent luminous form related to the shape of the rubidium spectrum lamp. In the existing atomic optical frequency standard system based on the rubidium lamp, the effective light energy that the detector can detect is only 10% of the total energy of the rubidium lamp without the application of an optical focusing device. -3 This order of magnitude. The current concentrating method is to add a single positive lens between the rubidium lamp and the detector. The focal length of the lens is just at the center of the rubidium lamp, so as to achieve the convergence effect on the central light emitted by the rubidium lamp. However, due to the limi...

AI Technical Summary

Problems solved by technology

However, due to the limitation of aperture and operating distance, the single positive lens cannot converge the edge rays with large divergence angle of the rubidium spectrum lamp, so the effect is limited.

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