A dual-wavelength laser based on stimulated Raman scattering of aqueous ethanol solution

Abstract

The invention relates to a dual-wavelength laser based on stimulated Raman scattering of aqueous ethanol solution. The dual-wavelength laser comprises a pump source, a diaphragm, a first window, a Raman box, a second window and a first color filter which are sequentially placed along an optical path. The first window, the Raman box and the second window are sequentially sealed and connected, and the Raman box is filled with an ethanol aqueous solution. The pump source generates laser light, the laser light passes through the diaphragm, the first window, and is incident into the Raman box containing the ethanol aqueous solution. At the same time, ethanol and water respectively generate stimulated Raman laser to form a dual-wavelength stimulated Raman laser with frequency difference. The first color filter filters out the pump light and transmits the required dual-wavelength laser. The pump source and the working medium of the invention have a wide selection range and flexible wavelengthselection. The threshold for resistance to light damage is high. The laser diameter and medium length are flexible. The cost is low, the dual-wavelength laser is easy to produce, is simple to debug,is wide in application range, can be used for fine laser spectroscopy, differential absorption laser radars, laser communication, environmental detection, fiber optic communication, nonlinear opticalfrequency conversion, etc.

Description

technical field [0001] The invention relates to a dual-wavelength laser device based on ethanol aqueous solution stimulated Raman scattering, which belongs to the field of laser technology. Background technique [0002] As an important laser technology, dual-wavelength laser can be widely used in fine laser spectroscopy, differential absorption lidar, laser communication, environmental detection, laser medical treatment, optical fiber communication, nonlinear optical frequency conversion, etc. Dual-wavelength laser is a research hotspot in the laser field in recent years, and people are competing to develop dual-wavelength lasers with new wavelengths and new generation mechanisms. [0003] At present, the dual-wavelength laser mainly uses solid crystal as the laser working material. The production methods mainly include: (1) The dual emission line method based on the two emission peaks of the laser crystal emission spectrum to realize the dual wavelength laser output. This ...

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Problems solved by technology

The wavelength interval of the dual-wavelength laser generated by this method is relatively large, which limits its application range, and is limited by the damage threshold of the optical frequency conversion crystal, making it difficult to obtain high-energy laser pulses.

For example, domestic related technologies such as Chinese patent document CN101777724A disclose an end-pumped dual-wavelength coaxial switching output Q-switched base frequency and frequency-multiplication laser. This patent provides an end-pumped dual-wavelength coaxial switching output Q-switched base frequency, double frequency laser, while obtaining the output of fundamental frequency light and frequency doubled light, but the laser wavelength interval is relatively large

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