Optofludic dye laser regulated and controlled by electric field for optical travelling wave

Abstract

The invention discloses an optofludic dye laser regulated and controlled by an electric field for an optical travelling wave. The traditional technical system is complicated, cannot be regulated and controlled and is high in preparation process requirement. Electrorheological effect and optofludic technique is combined by utilizing an optical resonant cavity of the optical travelling wave to form a resonant dye laser, a light beam from an incident pump sequentially passes through transmitting holes to enter the optical resonant cavity of the optical travelling wave, the optical resonant cavity of the optical travelling wave is a dual-layer cylindrical shell-shaped cavity, a laser reflection layer is arranged on the inner surface of an outer-layer shell of the cylindrical shell-shaped cavity, multiple travelling wave reflection is carried by a stimulated radiation light field and dye suspension liquid gain is processed to generate a laser light beam, a control electric field is applied between an inner-layer shell and the outer-layer shell of the cylindrical shell-shaped cavity, and regulation and control on optical resonant condition and laser emergent mode are achieved. The optofludic dye laser has the characteristics of an optical travelling wave cavity structure, simplicity in system, high miniaturization, a light beam output mode regulated and controlled by the electric field, high light energy utilization rate, wide application range, application flexibility and the like, and the preparation process is simple.

Description

technical field [0001] The invention belongs to the field of optical technology, and relates to a laser, in particular to an optical traveling wave optofluidic dye laser regulated by an electric field, which is mainly used for photoelectric detection, spectrum technology, laser measurement, optical fiber communication, laser processing, laser marking, and laser welding , laser guidance, laser medicine, wireless optical communication, optical micro-manipulation, optical microscopy and other fields as a laser light source. technical background [0002] A laser is a device that uses the principle of stimulated radiation to amplify or oscillate light in certain excited substances. The essential conditions for laser generation are population inversion and gain greater than loss. Generally, laser devices include: excitation source, working medium, and resonant cavity. Excitation is the excitation of the working medium to the excited state after absorbing external energy, which cr...

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Problems solved by technology

The laser has considerable advantages, but there are still some essential deficiencies: 1) The system uses optical gratings to form feedback, and constructs optical gratings in three-dimensional optical waveguides to form a distributed feedback system, and then forms an optical resonant cavity, all of which are microscopic structures , so in essence, the system has high requirements on the preparation process, and the preparation process of the laser is complicated and difficult, and the whole system is complicated; 2) Once the optical microstructure in the system is formed, it cannot be changed, and the structure of the optical resonant cavity cannot be adjusted. , resulting in the non-adjustable mode of the output beam of the laser, which affects the use range and application flexibility of the light source; 3): the linear fineness cavity structure is adopted, and the laser forms an optical standing wave in the high-definition cavity, resulting in uneven distribution of light intensity. And the optical grating is easy to interfere with the laser; 4) The pumping method is paraxial asymmetric pumping. The side of the pump beam is irradiated to the optical gain area and the area containing dye molecules. The pump beam is excited once, and the light energy utilization The efficiency is low, and the uniformity of the pumping effect is not high, which affects the quality of the laser output beam

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