JPS5858007B2 - streak tube - Google Patents
streak tubeInfo
- Publication number
- JPS5858007B2 JPS5858007B2 JP6724377A JP6724377A JPS5858007B2 JP S5858007 B2 JPS5858007 B2 JP S5858007B2 JP 6724377 A JP6724377 A JP 6724377A JP 6724377 A JP6724377 A JP 6724377A JP S5858007 B2 JPS5858007 B2 JP S5858007B2
- Authority
- JP
- Japan
- Prior art keywords
- photocathode
- plate
- photoelectrons
- slit
- incident
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
Description
【発明の詳細な説明】
本発明はピコ秒領域の超高速光現象を検出するためのス
トリーク管に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a streak tube for detecting ultrafast optical phenomena in the picosecond range.
従来のストリーク管は円筒状の高真空容器における一方
の端面に半透明の光電面を形成して、その前面に光電子
の加速電極と集束電極と偏向板および螢光板等を設けた
ものである。A conventional streak tube is a cylindrical high-vacuum container with a translucent photocathode formed on one end surface, and a photoelectron accelerating electrode, a focusing electrode, a deflection plate, a fluorescent plate, etc. provided on the front surface of the translucent photocathode.
すなわち上記光電面にピコ秒領域において強度が変化す
るレーザ光等をスリットを介して入射させると同時に偏
向板に掃引電圧を加えて、入射光の時間と強度との関係
を螢光板上における位置と螢光の強度との関係に変換し
、これを写真に撮影するかまたはテレビジョンカメラで
ビデオ信号に変換して解析する。That is, a laser beam or the like whose intensity changes in the picosecond region is incident on the photocathode through a slit, and at the same time a sweep voltage is applied to the deflection plate to determine the relationship between the time and intensity of the incident light and the position on the fluorescent plate. This is converted into a relationship with the intensity of the fluorescent light, which is then photographed or converted into a video signal using a television camera and analyzed.
しかしこのようなストリーク管においては、光電面の全
面から放出された熱電子が螢光板に入射するためにバッ
クグラウンドが上昇する。However, in such a streak tube, the background increases because thermoelectrons emitted from the entire surface of the photocathode enter the fluorescent plate.
かつ光電面を形成したガラス基板内における光の反射で
、光の入射点が拡大すると共に光電子流による光電面の
電圧降下で電子放出面の電位が変動して集束条件が変化
し、このため像の鮮鋭度が劣化して時間分解能が低下す
る等の欠点があった。In addition, due to the reflection of light within the glass substrate on which the photocathode is formed, the incident point of the light expands, and the voltage drop on the photocathode caused by the photoelectron flow changes the potential of the electron emission surface, changing the focusing conditions. There were drawbacks such as deterioration of sharpness and decrease in temporal resolution.
本発明はこのような欠点のないスＩ−ＩＪ−り管を提供
するものである。The present invention provides an I-IJ pipe that does not have these drawbacks.
第１図は本発明実施例の縦断面図、第２図は第１図のＡ
−Ａ断面図で、高真空に排気された円筒状のガラス気密
容器１の一方の端部に円環状の金属板よりなる端子導体
２を封着すると共に該容器の端面を透明基板としてその
上に半透明の光電面３を形成し、更にその上に不透明な
導体層４を蒸着してこの導体層４を前記端子導体２に連
結しである。FIG. 1 is a vertical cross-sectional view of an embodiment of the present invention, and FIG. 2 is an A of FIG. 1.
In the -A cross-sectional view, a terminal conductor 2 made of an annular metal plate is sealed to one end of a cylindrical glass airtight container 1 that is evacuated to a high vacuum, and the end surface of the container is used as a transparent substrate. A translucent photocathode 3 is formed on the photocathode 3, and an opaque conductor layer 4 is deposited thereon, and the conductor layer 4 is connected to the terminal conductor 2.
かつ上記導体層４の中央部には例えば幅ａが３０μｍ１
長さｂが３ｎ程度のスリット５を形成して、光電面３の
一部を露出させである。The center part of the conductor layer 4 has a width a of 30 μm1, for example.
A slit 5 having a length b of about 3n is formed to expose a part of the photocathode 3.
また容器１の他方の端面には螢光体６を塗布してその上
に導電層７を被着することにより螢光板を形成し、かつ
容器１の内部には前記導体層４の前面に数粍の距離を介
してメツシュ状の加速電極８を該導体層４と平行に配置
すると共にこの加速電極と前記螢光板との間に円筒状の
集束電極９および陽極１０を設けて、陽極１０の内部に
光電面３から放出された光電子を前記スリット５と直角
な方向へ偏向させるための一対の偏向板１１．１２を配
設し、偏向板１１を陽極１０に接続しである。Further, a fluorescent plate is formed by coating the other end surface of the container 1 with a phosphor 6 and depositing a conductive layer 7 thereon, and inside the container 1 there are several phosphors on the front surface of the conductive layer 4. A mesh-like accelerating electrode 8 is disposed parallel to the conductor layer 4 with a distance of 100 mm, and a cylindrical focusing electrode 9 and an anode 10 are provided between the accelerating electrode and the fluorescent plate. A pair of deflection plates 11 and 12 for deflecting photoelectrons emitted from the photocathode 3 in a direction perpendicular to the slit 5 is disposed inside, and the deflection plates 11 are connected to the anode 10.
更に陽極１０の端部には前記螢光板と対向するようにチ
ャンネルプレート１３を取付けて、その入射面側の電極
を陽極１０に接続しである。Further, a channel plate 13 is attached to the end of the anode 10 so as to face the fluorescent plate, and the electrode on the incident surface side is connected to the anode 10.
このチャンネルプレート１３はガラス板に微細な多数の
貫通孔を設けてその内面を二次電子の放出面となし、ガ
ラス板の両面に電極を形成したもので、該電極間に数百
乃至数千ボルトの電圧を印加して低電位側の電極面に電
子像を投射すると、各部に入射した電子が微細な貫通孔
の内面で反射を繰返えし、高電位側の電極面から数千倍
に増加された電子が放出される。This channel plate 13 is a glass plate with a large number of fine through-holes, the inner surface of which serves as a secondary electron emitting surface, and electrodes formed on both sides of the glass plate, with hundreds to thousands of holes between the electrodes. When a voltage of volts is applied and an electron image is projected onto the electrode surface on the low-potential side, the electrons incident on each part are repeatedly reflected on the inner surface of the minute through-hole, and the image from the electrode surface on the high-potential side is several thousand times larger. The electrons increased in number are emitted.
上述のストリーク管において、例スば陽極端子１４を接
地し、光電面端子１５、加速電極端子１６および集束電
極端子１７にそれぞれ−６，５，ＫＶ 。In the streak tube described above, for example, the anode terminal 14 is grounded, and the photocathode terminal 15, accelerating electrode terminal 16, and focusing electrode terminal 17 are applied with -6.5, KV, respectively.
−５に、Ｖおよび−５，６ＫＶの電圧を加える。-5, apply a voltage of V and -5,6 KV.
またチャンネルプレートの螢光板側電極の端子１８およ
び螢光板端子１９にそれぞれ０．９Ｉ（Ｖおよび３．９
ＫＶ＆）電圧を写える。In addition, 0.9 I (V and 3.9
KV&) voltage can be photographed.
この状態において、ピコ秒領賊で強度が変化するレーザ
光等を光４Ｉ面３に入射させると同時に偏向板端子２０
に掃引電圧を加えると、上記光電面３におけるスリット
５と対向した露出部分から光電子が放出される。In this state, a laser beam or the like whose intensity changes in a picosecond manner is incident on the light 4I surface 3, and at the same time the deflection plate terminal 20
When a sweep voltage is applied to , photoelectrons are emitted from the exposed portion of the photocathode 3 facing the slit 5 .
この電子線ｅはメツシュ状の電極８で加速されると共に
集束電極９と陽極１０との間の電子レンズで集束されて
偏向板１１．１２の間に入射し、その入射時刻に対応し
た角度の偏向を受１てチャンネルプレート１３の上にス
リット５ｏ）焦点を結ぶ。This electron beam e is accelerated by the mesh-like electrode 8, focused by the electron lens between the focusing electrode 9 and the anode 10, and is incident between the deflection plates 11 and 12 at an angle corresponding to the incident time. After receiving the deflection, the slit 5o focuses on the channel plate 13.
従ってチャンネルプレー ト１３における高電位側の電
極面から数千倍に増倍された電子が放出され、上記電極
と螢光板との間の電界で加速されて該螢光板に入射する
。Therefore, electrons multiplied several thousand times are emitted from the high potential side electrode surface of the channel plate 13, accelerated by the electric field between the electrode and the fluorescent plate, and incident on the fluorescent plate.
すなわち螢光体６が入射電子で励起されて発光するから
、螢光板子には前述の入射光における時間と光の強度と
の関係を位ｆ４：と螢光の強度との関係に変換した像が
現れるもので、この像を写真に撮影するか、あるい４’
、−、’ｊ、 ’５−レビジョンカメラでビデオ信号に
変換Ｌ７て解析を行う。In other words, since the phosphor 6 is excited by the incident electrons and emits light, the phosphor plate has an image obtained by converting the relationship between the time and intensity of the incident light into the relationship between the position f4: and the intensity of the fluorescent light. will appear, take a picture of this statue, or
, -, 'j, ' 5-Conversion into a video signal with a revision camera L7 and analysis.
以し実施例について説明したように本発明は、気密容器
の一方の端部における透明な基板上に半透明デ；電面を
形成して更（こその−Ｌに不透明な導体層を被着し、そ
の導体層に細い］つのスリットを設りて光電面の一部を
露出させたものである。As described above in connection with the embodiments, the present invention involves forming a translucent conductive layer on a transparent substrate at one end of an airtight container, and then coating an opaque conductive layer on the transparent substrate. Then, two thin slits were provided in the conductor layer to expose a portion of the photocathode.
すなわち従来のスト＋、、）−り管におい”Ｃは光電面
の全面から放出される熱電子が螢弄板に入射する。That is, in the conventional storage tube, thermoelectrons emitted from the entire surface of the photocathode are incident on the phosphor plate.
しかも例え（オ写真、撮影に際して観測光Ｑ〕入射時間
は数百ピコ秒程度であるに対し、シャッタの開放時間は
数十分の一部であって、この開放時間中螢光板が熱電子
で励起されて発光するためにバッグラウンドの輝度が著
しく上昇したものである。Moreover, while the incident time (observation light Q during photography) is about several hundred picoseconds, the shutter opening time is only a few tens of minutes, and during this opening time, the phosphor plate is exposed to thermoelectrons. The background brightness increases significantly due to the excitation and emission of light.
これに対して上述のような本発明のストリーク管は、熱
電子の放出面積が光電子の放出面積と等しく、極めて小
さいためにバッグラウンドの輝度が著しく低下する。On the other hand, in the streak tube of the present invention as described above, the emission area of thermoelectrons is equal to the emission area of photoelectrons, which is extremely small, so that the background brightness is significantly reduced.
かつ螢光板の発光光線が光電面に入射して放出される光
電子、あるいは第３図に示したようにスリット５を通過
して加速電極８等で反射した光線ｒのうち光電面３に入
射する光線等も極めて小さくなる。In addition, the light emitted from the fluorescent plate enters the photocathode 3, and the emitted photoelectrons or the ray r that passes through the slit 5 and is reflected by the accelerating electrode 8 etc. as shown in FIG. Light rays etc. also become extremely small.
更に光電面３に入射する観測光Ｓが基板中で反射した光
線Ｉ）はスリット５以外の部分における光電面に入射し
て、光電子を放出しない。Furthermore, the light ray I) reflected in the substrate from the observation light S incident on the photocathode 3 is incident on the photocathode in a portion other than the slit 5 and does not emit photoelectrons.
従って螢光板におけるバッグラウンドの輝度を極めて低
くくすることができる。Therefore, the background brightness on the fluorescent plate can be made extremely low.
また光電面３における光電子−を放出する部分は数十ミ
クロン以下の至近距離をもって導体層４に接続されるか
ら、その光電流が光電面中を流れることによる電圧降下
は極めて小さく、これを無視することかできる。Furthermore, since the part of the photocathode 3 that emits photoelectrons is connected to the conductor layer 4 at a close distance of several tens of microns or less, the voltage drop caused by the photocurrent flowing through the photocathode is extremely small and can be ignored. I can do it.
従って光電子の放出によってその放出面の電位が変動す
るようなおそれがないもので、このため光電子線Ｃの電
子軌道が安定する。Therefore, there is no fear that the potential of the emission surface will fluctuate due to the emission of photoelectrons, and therefore the electron trajectory of the photoelectron beam C is stabilized.
すなわち集束条件が乱されないと共に光電子の放出部分
がスリット５に限定されているから螢Ｊｆ：、板上に良
好ｊ（ｆ焦点を結んで、時間分解能も向上する。That is, since the focusing conditions are not disturbed and the photoelectron emission area is limited to the slit 5, a good focus can be established on the plate, and the temporal resolution can also be improved.
第１図は本発明実施例の縦断面図、第２図は第１図のＡ
−Ａ断面図、第３図は第１図の一部を拡大し２だ間であ
る。
なお図において、１は気密容器、２は端子導体、３は光
電面、４は導体層、５はスリット、６は螢光体、７は導
電層、８は加速電極、９は集束電極、１０は陽極、ｌＬ
１２は偏向板、１３はチャンネルプレートFIG. 1 is a vertical cross-sectional view of an embodiment of the present invention, and FIG. 2 is an A of FIG. 1.
-A sectional view, FIG. 3, is an enlarged view of a part of FIG. In the figure, 1 is an airtight container, 2 is a terminal conductor, 3 is a photocathode, 4 is a conductor layer, 5 is a slit, 6 is a phosphor, 7 is a conductive layer, 8 is an accelerating electrode, 9 is a focusing electrode, 10 is the anode, lL
12 is a deflection plate, 13 is a channel plate
Claims (1)
透明な基板上に半透明の光電面を形成すると共に１つの
スリットを有する不透明な導体層を上記光電面上に被着
して上記導体層を端子導体に接続し、前記光電面の前面
に該光電面から放出される光電子の加速電極と集束電極
および光電子を前記スリットと直角な方向へ偏向させる
一対の偏向板並びに光電子で励起されて発光する螢光板
を設けたことを特徴とするストリーク管。1 Forming a translucent photocathode on a transparent substrate at one end of a cylindrical container evacuated to high vacuum, and depositing an opaque conductor layer having one slit on the photocathode; A conductor layer is connected to a terminal conductor, and on the front surface of the photocathode there is provided an acceleration electrode and a focusing electrode for photoelectrons emitted from the photocathode, a pair of deflection plates that deflect the photoelectrons in a direction perpendicular to the slit, and a pair of deflection plates that are excited by the photoelectrons. A streak tube characterized by being provided with a fluorescent plate that emits light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6724377A JPS5858007B2 (en) | 1977-06-09 | 1977-06-09 | streak tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6724377A JPS5858007B2 (en) | 1977-06-09 | 1977-06-09 | streak tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS542789A JPS542789A (en) | 1979-01-10 |
| JPS5858007B2 true JPS5858007B2 (en) | 1983-12-23 |
Family
ID=13339273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6724377A Expired JPS5858007B2 (en) | 1977-06-09 | 1977-06-09 | streak tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5858007B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107805U (en) * | 1985-12-26 | 1987-07-09 | ||
| JPH01265940A (en) * | 1988-04-15 | 1989-10-24 | Matsushita Electric Works Ltd | Electronic tonometer |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5935344A (en) * | 1982-08-21 | 1984-02-27 | ダニ−ル・ジヨセフ・ブラツドリ− | Electro-optical image tube and method of operating same |
| JPH0762987B2 (en) * | 1985-04-16 | 1995-07-05 | 浜松ホトニクス株式会社 | Strike tube having an image cutting device in the tube |
-
1977
- 1977-06-09 JP JP6724377A patent/JPS5858007B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62107805U (en) * | 1985-12-26 | 1987-07-09 | ||
| JPH01265940A (en) * | 1988-04-15 | 1989-10-24 | Matsushita Electric Works Ltd | Electronic tonometer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS542789A (en) | 1979-01-10 |
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