Nonlinear optical element
A nonlinear optical and nonlinear technology, applied in nonlinear optics, optical components, optics, etc., can solve problems such as high cost, harsh operating conditions, and reduced laser nonlinear conversion efficiency.
Inactive Publication Date: 2017-05-10
JIANGSU SKYERALASER TECH
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Problems solved by technology
When the nonlinear optical material cannot be placed in the optical oscillation cavity, that is, the nonlinear conversion in the cavity, the nonlinear conversion efficiency of the laser will be seriously reduced; or the technical means with harsh operating conditions and high cost must be used to improve the laser Nonlinear Conversion Efficiency
Method used
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Embodiment Construction
[0015] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.
[0016] As shown in Figure 1, a nonlinear optical device, which includes:
[0017] Blazed grating 30, when the fundamental frequency laser is incident on the blazed grating 30 along the incident direction of the blazed grating 30, most of the fundamental frequency laser is reflected to the blazed direction of the blazed grating 30; When the blazed direction of the grating 30 is incident on the blazed grating 30, most of the fundamental frequency laser will propagate in the opposite direction along the blazed direction; wherein, the incident direction and the blazed direction are symmetrical about the normal of the blazed grating 30;
[0018] An oscillating part, the oscillating part includes a nonlinear optical material 50 and a total reflection mir...
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The invention discloses a nonlinear optical element comprising a blazed grating part and an oscillation part. The oscillation part comprises nonlinear optical material and a holophote. When fundamental frequency laser enters the blazed grating along an incidence direction of the blazed grating, a large part of the fundamental frequency laser can be reflected to a blaze direction of the blazed grating; when fundamental frequency laser enters the blazed grating along the blaze direction of the blazed grating, a large part of the fundamental frequency laser can spread opposite to the blaze direction; the incidence direction and the blaze direction are symmetric to a normal of the blazed grating; the nonlinear optical material and the holophote are orderly arranged along the blazed direction of the blazed grating; and an oscillation cavity can be formed by the holophote and the blazed grating. By the use of blaze features of the blazed grating, the fundamental frequency laser can be effectively restricted in the oscillation cavity can be formed by the holophote and the blazed grating; and nonlinear conversion can be finished in the nonlinear optical material, and laser nonlinear conversion efficiency can be improved.
Description
technical field [0001] The invention relates to a nonlinear optical device. Background technique [0002] At present, the optical nonlinear process is an important means of laser frequency expansion. In this way, deep ultraviolet laser, mid-far infrared laser or terahertz oscillation can be obtained at a lower cost, and the laser design is more compact. Optical nonlinear conversion mainly utilizes the nonlinear effect of light in materials and the Raman effect, etc. These effects are only apparent under the action of high-energy lasers, and the energy efficiency in the frequency conversion process also directly depends on the fundamental frequency in the material. The energy density of light and the length of light action. Due to limitations in material performance, size, quality, and cost, it is not easy to obtain efficient laser nonlinear conversion. Confining the fundamental frequency light in the nonlinear optical material to obtain high energy density, thereby improvi...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G02F1/35G02F1/355G02B5/18
CPCG02B5/1861G02F1/3501G02F1/353G02F1/3551G02F1/3503
Inventor 席道明黄凌雄吕艳钊马永坤魏皓
Owner JIANGSU SKYERALASER TECH