Electron beam-pumped gas laser system专利检索-脉冲电场电场物理专利检索查询-专利查询网

Electron beam-pumped gas laser system

阅读：189发布：2023-07-15

专利汇可以提供Electron beam-pumped gas laser system专利检索，专利查询，专利分析的服务。并且An electron beam-initiated-and-sustained gas laser system capable of producing uniform, high energy, large-volume electrical discharges in a high-pressure gaseous lasing medium. A thin metallic window separates the low pressure electron gun cavity from the longitudinally parallel high pressure gas cavity, such that the injected primary electrons create low energy secondary electrons which are swept across the gas cavity by an applied electric field collisionally exciting the gaseous medium. The system is applicable in both the oscillator and amplifier configurations, and is capable, for example, of producing a 10 joule/liter of active volume short (tp about 1 ns) CO2 laser pulse, while being operable in a manned area due to the housing being electrically neutral.，下面是Electron beam-pumped gas laser system专利的具体信息内容。

权利要求

1. An electron beam-initiated-and-sustained electricaldischarge gas laser system comprising: a vessel containing a gaseous lasing medium under pressure, said vessel comprising a housing defining a longitudinally extending closed chamber therein, Brewster angle windows transparent to light at frequencies which the medium exhibits gain positioned in opposite endwalls of said housing, a pair of electrode means positioned in spaced relation longitudinally within said chamber, said electrode means extending along a major portion of the longitudinal length of said housing, said pair of electrode means comprising a longitudinally extending cathode and a longitudinally extending anode, said cathode being connected electrically to ground and said anode being connected electrically positive with respect to ground, means electrically connected to said cathode and anode for impressing thereacross a voltage less than the breakdown voltage of said pressurized gaseous lasing high energy medium, means for supplying said chamber with said gaseous lasing medium, window means transparent to high energy electrons positioned longitudinally in said housing and in close proximity to said cathode, said window means comprising a thin longitudinally extending member defining a portion of a wall surface of said chamber and extending along a major longitudinal portion of said housing, said window means being supported by a grill-like member, said window means and said grill-like member being supported by said housing and electrically connected to ground, electron generating means positioned longitudinally parallel to and along a major portion of said housing adjacent said window means, said electron generating means including a longitudinally extending casing secured to said housing so as to define a chamber in open communication along the longitudinal length thereof with said window means, means connected to said casing for producing a vacuum in said last-mentioned chamber, said window means defining an anode of said electron generating means, cathode means positioned longitudinally in said casing in spaced relationship with said window means and connected electrically negative with respect to ground, means for producing a voltage drop between said cathode means and said window means including a negative potential power supply electrically connected to said cathode means, and means for controlling said voltage drop comprising a control grid positioned in said chamber intermediate said cathode menas and said window means and means for controlling said control grid, whereby activation of said electron generating means directs at least one beam of highenergy electrons along substantially the longitudinal length and throughout substantially the cross-sectional area of said housIng and through said gaseous lasing medium in said first-mentioned chamber ionizing it slightly and triggering and sustaining a large uniform electrical discharge between said cathode and said anode exciting the lasing medium and creating a large population inversion allowing stimulation thereby producing a high energy output.

2. The laser system defined in claim 1, wherein said gaseous lasing medium is selected from the group consisting of CO2, N2, He, selected rare gases, and mixtures thereof.

3. The laser system defined in claim 1, wherein said pressurized gaseous lasing medium is at a pressure in the range of about 1 to 10 atmospheres.

4. The laser system defined in claim 1, wherein said gaseous lasing medium is retained in said longitudinally extending chamber of said housing at a pressure of about 1 to 10 atmospheres, and selected from the group consisting of CO2, N2, He, rare gases, and mixtures thereof.

5. The laser system defined in claim 1, wherein said window means comprises a layer of material having a thickness in the range of about 1/2 to about 10 mils and selected from the group consisting of aluminum, titanium, and KAPTON.

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