A bismuth borate noncollinear double frequency crystal device
A frequency doubling crystal, non-collinear technology, applied in the field of optoelectronics, which can solve the problems of large loss, low conversion efficiency, and complex device
Inactive Publication Date: 2004-11-17
SHANDONG UNIV
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problems of complex devices, large loss, low conversion efficiency and difficulty in practical application existing in the existing non-collinear frequency multiplication technology
Method used
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Embodiment 1
[0041] When the incident light wavelength of the bismuth borate crystal is 542nm, the exit surface of the crystal is processed along the Y axis, and the tangent angle of the incident surface is θ=90°, φ=90°, that is, it is tangent along the Y axis.
Embodiment 2
[0043] When the incident light wavelength of bismuth borate crystal is 660nm, the exit surface of the crystal is processed along the Y axis, and the cut angle of the incident surface is θ=75.2°±3° in the YOZ plane, and φ=74.1°±3° in the XOY plane.
Embodiment 3
[0045] When the incident light wavelength of bismuth borate crystal is 808nm, the exit surface of the crystal is processed along the Y axis, and the cut angle of the incident surface is θ=72°±3° in the YOZ plane, and φ=70.7°±3° in the XOY plane.
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Abstract
The invention refers to a kind of bismuth boracic acid non-colinear frequency multiplication crystal device, which belongs to photoelectron technology field. The main content of then invention is that: the exit facet chamfer of the bismuth boracic acid crystal device is definite, along the refractive rate main shaft Y, the entrance face chamfer changes along with the change of the base frequency light wavelength, when the entrance face wavelength is 542nm-1380nm, the entrance facet of the crystal chamfer range is (1) in YOZ plane with phi=90 degrees, from phi =90 o to theta=70oí‚3 o; (2), in the XOY plane with theta=90 o, from phi=90 o to phi=68.3 oí‚3 o. The invention uses a special inner angle total reflection technology, saves the splitting device of the base frequency light. The invention has merits of natural separation of base frequency and the frequency multiplication, the high converting efficiency, low energy consumption, simple device, low cost.
Description
(1) Technical field [0001] The present invention relates to a novel, efficient bismuth borate [BiB 3 o 6 , referred to as BIBO] non-collinear frequency doubling crystal device, belongs to the field of optoelectronic technology. (2) Background technology [0002] In the field of nonlinear optics, using nonlinear crystal as the working medium and using phase matching technology to realize the frequency conversion of near-infrared light is a common method to obtain visible and ultraviolet coherent light sources. In the traditional collinear phase matching technology, whether it is frequency multiplication or sum frequency, the remaining fundamental frequency light and the new harmonic frequency light propagate in the same direction after exiting the crystal, so special technology is required to separate the harmonic frequency light from the fundamental frequency light , whether it is to use a filter or a prism to split the light, it will increase the loss of the system and in...
Claims
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IPC IPC(8): G02F1/35H01S3/109H01S3/16
Inventor 王正平邵宗书王继扬胡大伟许贵宝许心光刘均海董胜明
Owner SHANDONG UNIV
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