JPH0423479A - Laser device - Google Patents
Laser deviceInfo
- Publication number
- JPH0423479A JPH0423479A JP12877190A JP12877190A JPH0423479A JP H0423479 A JPH0423479 A JP H0423479A JP 12877190 A JP12877190 A JP 12877190A JP 12877190 A JP12877190 A JP 12877190A JP H0423479 A JPH0423479 A JP H0423479A
- Authority
- JP
- Japan
- Prior art keywords
- quartz glass
- glass tube
- laser
- doped
- light source
- 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.)
- Pending
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 230000005284 excitation Effects 0.000 claims description 13
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052804 chromium Inorganic materials 0.000 abstract description 5
- 239000011651 chromium Substances 0.000 abstract description 5
- 238000005086 pumping Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 229910052724 xenon Inorganic materials 0.000 description 15
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 15
- 239000000498 cooling water Substances 0.000 description 11
- 229910052684 Cerium Inorganic materials 0.000 description 5
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lasers (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、エネルギー効率の高いレーザー装置に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a laser device with high energy efficiency.
［従来の技術］
Ｎｄ： ＹＡＧレーザーの場合、キセノンフラッシュ
ランプを励起光源とし、集光反射鏡でレーザー媒質であ
るＹＡＧロッドに光を照射し、ミラー系からなる共振器
でレーザー発振をさせている。[Conventional technology] In the case of Nd: YAG laser, a xenon flash lamp is used as an excitation light source, a condensing reflector is used to irradiate light onto a YAG rod, which is a laser medium, and a resonator made of a mirror system is used to oscillate the laser. .
キセノンランプが高熱を発するため、ランプとＹＡＧロ
ッドを石英管で囲み、冷却水を循環させている。Because the xenon lamp generates high heat, the lamp and YAG rod are surrounded by a quartz tube and cooling water is circulated.
［発明が解決しようとする課題］
しかし、Ｎｄ： ＹＡＧは７２０〜８３０ｎｍの励起光
に対してのみレーザー遷移を行うが、キセノンランプの
発光スペクトルは、全波長域でほぼフラットである。７
２０ｎｍより短波長の光はロッドの劣化原因に、８３０
ｎｍより長波長の光は発熱源となり、エネルギーの大き
な損失となっている。[Problems to be Solved by the Invention] However, while Nd:YAG performs laser transition only for excitation light of 720 to 830 nm, the emission spectrum of a xenon lamp is substantially flat over the entire wavelength range. 7
Light with a wavelength shorter than 20 nm causes rod deterioration, and 830
Light with a wavelength longer than nm becomes a heat source, resulting in a large loss of energy.
本発明は励起光源の発光スペクトルを変化させることに
より、エネルギー効率を上げ、レーザー媒質の劣化を防
ぐことを目的としている。また、エネルギー効率の向上
は、励起光源の寿命を延ばすことにもなる。The present invention aims to improve energy efficiency and prevent deterioration of the laser medium by changing the emission spectrum of the excitation light source. Improving energy efficiency also extends the lifetime of the excitation light source.
［課題を解決するための手段］
本発明は、励起光源、レーザー媒質、共振器から構成さ
れるレーザー装置において、励起光源とレーザー媒質の
少なくとも一方を、ドープト石英ガラス管で囲むことを
特徴とする。[Means for Solving the Problems] The present invention is a laser device comprising an excitation light source, a laser medium, and a resonator, characterized in that at least one of the excitation light source and the laser medium is surrounded by a doped quartz glass tube. .
以下、実施例により本発明の詳細を示す。Hereinafter, the details of the present invention will be shown by examples.
［実施例］
実施例Ｉ
Ｎｄ： ＹＡＧレーザー装置の断面構造の概念を表す
図を、第１図に示す。ＹＡＧロッド１を石英ガラス管４
で囲み、冷却水６を流した。一方キセノンフラッシュラ
ンプ２をクロムをドープした石英ガラス管５（例えば特
開昭６Ｏ−７６９３３）で囲み冷却水を流した。[Example] Example I A diagram showing the concept of the cross-sectional structure of a Nd: YAG laser device is shown in FIG. YAG rod 1 into quartz glass tube 4
, and cooling water 6 was poured into it. On the other hand, the xenon flash lamp 2 was surrounded by a chromium-doped quartz glass tube 5 (for example, Japanese Patent Application Laid-Open No. 60-76933), and cooling water was allowed to flow therethrough.
クロムをドープした石英ガラスは４００〜６００ｎｍの
波長の光を吸収し、６００〜８５０ｎｍの波長域で発光
する。キセノンフラッシュランプから出射した光は、ク
ロムをドープした石英ガラス管を通過することにより、
６００ｎｍより短波長の光がカットされ、６００〜８５
０ｎｍの波長域の輝度が倍増した。Chromium-doped quartz glass absorbs light in the wavelength range of 400 to 600 nm and emits light in the wavelength range of 600 to 850 nm. The light emitted from the xenon flash lamp passes through a chromium-doped quartz glass tube.
Light with a wavelength shorter than 600nm is cut, and the wavelength of 600-85
The brightness in the 0 nm wavelength range has doubled.
このように波長変換した光を、集光反射鏡３でＮｄ：
ＹＡＧロッドに照射し、共振器でレーザー光を取り出
したところ、レーザーの出射強度は従来のほぼ２倍とな
った。また長時間使用しても、ＹＡＧロッドおよびクロ
ムをドープした石英ガラス管には、ソーラリゼーション
による劣化が発生せず、レーザー特性に変化は認められ
なかった。The light whose wavelength has been converted in this way is converted to Nd:
When a YAG rod was irradiated with the laser beam and the laser beam was extracted using a resonator, the laser output intensity was almost twice that of the conventional one. Further, even after long-term use, the YAG rod and the chromium-doped quartz glass tube did not deteriorate due to solarization, and no change was observed in the laser characteristics.
実施例２
アレキサンドライト（ｃｒ： ＢｅＡ１２０ａ）ロッ
ドを、セリウムをドープした石英ガラス管で囲み、冷却
水を流した。一方キセノンフラッシュランプを石英管で
囲み、冷却水を流した。Example 2 An alexandrite (CR: BeA120a) rod was surrounded by a cerium-doped quartz glass tube, and cooling water was passed through it. On the other hand, the xenon flash lamp was surrounded by a quartz tube, and cooling water was passed through it.
セリウムをドープした石英ガラスは、２００〜３００ｎ
ｍの紫外線を吸収し、３５０〜５５０ｎｍの波長域で発
光する。アレキサンドライトレーザーは、４００〜６５
０ｎｍの励起光を吸収し、７００〜８１８ｎｍの波長可
変レーザー発振を起こす。Cerium-doped quartz glass is 200-300N
It absorbs ultraviolet rays of m and emits light in the wavelength range of 350 to 550 nm. Alexandrite laser is 400-65
It absorbs 0 nm excitation light and generates wavelength tunable laser oscillation from 700 to 818 nm.
クリプトンフラッシュランプの出射光が集光反射鏡で反
射され、セリウムをドープした石英ガラスを通過すると
、３００ｎｍより短波長の光がカットされ、３５０〜５
００ｎｍの波長域の輝度が倍増した。このように波長変
換した光をアレキサンドライトロッドに照射し、共振器
でレーザーを取り出したところ、レーザーの出射強度は
従来のほぼ２倍となった。When the emitted light from the krypton flash lamp is reflected by a condensing reflector and passes through cerium-doped quartz glass, light with wavelengths shorter than 300 nm is cut out, and the light with wavelengths shorter than 300 nm is
The brightness in the 00 nm wavelength range has doubled. When the alexandrite rod was irradiated with the wavelength-converted light and the laser was extracted from the resonator, the laser output intensity was almost twice that of the conventional one.
実施例３
Ｎｄ： ＹＡＧロッドを、クロムをドープした石英ガ
ラス管で囲み、冷却水を流した。一方キセノンフラッシ
ュランプを、セリウムをドープした石英ガラス管で囲み
、冷却水を流した。Example 3 A Nd:YAG rod was surrounded by a chromium-doped quartz glass tube, and cooling water was passed through it. On the other hand, the xenon flash lamp was surrounded by a quartz glass tube doped with cerium, and cooling water was passed through it.
キセノンフラッシュランプの出射光が、セリウムをドー
プした石英ガラス管、続いてクロムをドープした石英管
を通過すると、６００ｎｍより短波長の光がカットされ
、６００〜８５０ｎｍの波長の光が約３倍の強度になっ
た。このように波長変換した光をＮｄ： ＹＡＧロッド
に照射し、共振器でレーザーを取り出したところ、レー
ザーの出射強度は従来の３倍近くに増加した。When the emitted light from a xenon flash lamp passes through a quartz glass tube doped with cerium and then a quartz tube doped with chromium, light with wavelengths shorter than 600 nm is cut out, and light with wavelengths between 600 and 850 nm is cut out by about three times as much. It became strong. When the Nd: YAG rod was irradiated with the light whose wavelength had been converted in this way and the laser was extracted from the resonator, the laser output intensity increased to nearly three times that of the conventional method.
実施例４
Ｎｄｒ ＹＡＧロッドを、セリウムとクロムを共ドー
プした石英ガラス管で囲み、冷却水を流した。Example 4 A Ndr YAG rod was surrounded by a quartz glass tube co-doped with cerium and chromium, and cooled water was flowed through it.
一方キセノンフラッシュランプを、石英ガラス管で囲み
、冷却水を流した。On the other hand, the xenon flash lamp was surrounded by a quartz glass tube, and cooling water was passed through it.
キセノンフラッシュランプの出射光が集光され、セリウ
ムとクロムを共ドープした石英管を通過すると、６００
ｎｍより短波長の光がカットされ、６００〜８５０ｎｍ
の波長の光が約３倍の強度になった。このように波長変
換した光をＮｄ： ＹＡＧロッドに照射し、共振器で
レーザーを取り出したところ、レーザーの出射強度は従
来の３倍近くに増加した。When the emitted light from a xenon flash lamp is focused and passes through a quartz tube co-doped with cerium and chromium, it produces 600
Light with wavelengths shorter than 600 to 850 nm is cut.
The intensity of light with this wavelength has become approximately three times as strong. When the Nd:YAG rod was irradiated with the wavelength-converted light in this way and the laser was extracted from the resonator, the laser output intensity increased nearly three times that of the conventional method.
実施例５
アレキサンドライトレーザ装置の断面構造の概念を表す
図を、第２図に示す。アレキサンドライトロッド１１及
びキセノンフラッシュランプ１２を、セリウムをドープ
した石英ガラス管１４で囲み、冷却水１５を流した。Example 5 FIG. 2 shows a conceptual diagram of the cross-sectional structure of an alexandrite laser device. The alexandrite rod 11 and the xenon flash lamp 12 were surrounded by a quartz glass tube 14 doped with cerium, and cooling water 15 was flowed therethrough.
キセノンランプを出射した光は、セリウムをドープした
石英ガラス管で波長変換され、集光反射鏡１３でアレキ
サンドライトロッドに集光される。The light emitted from the xenon lamp is wavelength-converted by a cerium-doped quartz glass tube, and is focused onto an alexandrite rod by a condensing reflector 13.
共振器でレーザー光を取り出したところ、レーザーの出
射強度は従来のほぼ２倍となった。When the laser beam was extracted using a resonator, the intensity of the laser beam was almost twice that of the conventional one.
また、レーザーの出射強度が従来並みになるよう、キセ
ノンランプの動作エネルギーを約半分にしたところ、ラ
ンプ寿命を１０倍近く延ばすことができた。Furthermore, by cutting the operating energy of the xenon lamp by about half so that the laser output intensity was the same as before, the lamp life could be extended nearly 10 times.
以上数種類のり−ザー装置について実施例を述べてきた
が、励起光源やレーザー媒質の種類に何ら限定されるこ
とはない。また、石英ガラスへのドーピング物質も種々
考えられる。Although several types of laser apparatuses have been described above, the invention is not limited to the type of excitation light source or laser medium. Furthermore, various doping substances for quartz glass can be considered.
［発明の効果］
以上述べたように本発明によれば、励起光源、レーザー
媒質、共振器から構成されるレーザー装置において、励
起光源とレーザー媒質の少なくとも一方を、ドープト石
英ガラス管で囲むことにより、エネルギー効率を上げ、
レーザー媒質の劣化を防ぐことができた。また、エネル
ギー効率の向上により、励起光源の寿命を延ばすことが
できた。[Effects of the Invention] As described above, according to the present invention, in a laser device composed of an excitation light source, a laser medium, and a resonator, by surrounding at least one of the excitation light source and the laser medium with a doped quartz glass tube, , increase energy efficiency,
We were able to prevent the deterioration of the laser medium. In addition, the lifetime of the excitation light source could be extended by improving energy efficiency.
第１図は本発明の実施例１における、Ｎｄ： ＹＡＧ
レーザー装置の断面構造の概念を表す図である。第２図
は本発明の実施例５における、アレキサンドライトレー
ザー装置の断面構造の概念を表す図である。
ＹＡＧロッド
キセノンフラッシュランプ
集光反射鏡
石英ガラス管
クロムをドープした石英ガラス管
冷却水
アレキサンドライトロッド
キセノンフラッシュランプ
集光反射鏡
セリウムをドープした石英ガラス管
冷却水
以 上FIG. 1 shows Nd: YAG in Example 1 of the present invention.
FIG. 2 is a diagram illustrating the concept of a cross-sectional structure of a laser device. FIG. 2 is a diagram showing the concept of a cross-sectional structure of an alexandrite laser device in Example 5 of the present invention. YAG rod xenon flash lamp focusing reflector quartz glass tube chromium-doped quartz glass tube cooling water Alexandrite rod xenon flash lamp focusing reflector cerium-doped quartz glass tube cooling water
Claims (1)
ー装置において、励起光源とレーザー媒質の少なくとも
一方を、ドープト石英ガラス管で囲むことを特徴とする
レーザー装置。A laser device comprising an excitation light source, a laser medium, and a resonator, characterized in that at least one of the excitation light source and the laser medium is surrounded by a doped silica glass tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12877190A JPH0423479A (en) | 1990-05-18 | 1990-05-18 | Laser device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12877190A JPH0423479A (en) | 1990-05-18 | 1990-05-18 | Laser device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0423479A true JPH0423479A (en) | 1992-01-27 |
Family
ID=14993066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12877190A Pending JPH0423479A (en) | 1990-05-18 | 1990-05-18 | Laser device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0423479A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008161269A (en) * | 2006-12-27 | 2008-07-17 | Hiroshi Ariyama | Hanger for clothes display-cum-clotheshorse |
| WO2017204358A1 (en) * | 2016-05-27 | 2017-11-30 | 富士フイルム株式会社 | Solid-state laser device |
-
1990
- 1990-05-18 JP JP12877190A patent/JPH0423479A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008161269A (en) * | 2006-12-27 | 2008-07-17 | Hiroshi Ariyama | Hanger for clothes display-cum-clotheshorse |
| WO2017204358A1 (en) * | 2016-05-27 | 2017-11-30 | 富士フイルム株式会社 | Solid-state laser device |
| US10587088B2 (en) | 2016-05-27 | 2020-03-10 | Fujifilm Corporation | Solid-state laser device |
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