JPH0311778A - Semiconductor laser excitation solid-state laser device - Google Patents

Semiconductor laser excitation solid-state laser device

Info

Publication number
JPH0311778A
JPH0311778A JP14543389A JP14543389A JPH0311778A JP H0311778 A JPH0311778 A JP H0311778A JP 14543389 A JP14543389 A JP 14543389A JP 14543389 A JP14543389 A JP 14543389A JP H0311778 A JPH0311778 A JP H0311778A
Authority
JP
Japan
Prior art keywords
mirrors
solid
wavelength
mirror
state laser
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
Application number
JP14543389A
Other languages
Japanese (ja)
Inventor
Hideo Nagai
秀男 永井
Masahiro Kume
雅博 粂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14543389A priority Critical patent/JPH0311778A/en
Publication of JPH0311778A publication Critical patent/JPH0311778A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enable a solid-state laser device of this design to oscillate in three primary colors by a method wherein two or more mirrors of different reflectivities are arranged, and a solid-state laser crystal is excited from one side using a semiconductor laser. CONSTITUTION:Reflective mirrors 3 and 4 different from each other in reflectivity, and semiconductor laser rays 6 are converged on the edge face of a solid- state laser crystal Nd:YAD rod 1. Each of the reflective mirrors 3 and 4 is provided with three reflective mirrors, a non-reflective coating mirror, a high reflective coating mirror, and an HR coating mirror. The wavelength of the HR coating is so adjusted as to enable three primary colors, red, blue, and red, to be oscillated. The exciting side circular plate mirror 3 and the outgoing side circular plate mirror 4 can be controlled in inclination so as to be adapted for oscillation wavelengths, and the reflectivity of the mirrors is so set as to make wavelengths constant in output. By this setup, as three primary colors can be oscillated, the mirrors 3 and 4 are selected corresponding to a required wavelength to enable a solid-state laser device of this design to oscillate in required wavelength.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、半導体レーザにより励起する固体レーザ装置
に関し、光ディスクの記録再生、レーザプリンタ、プロ
ジェクションTV等に利用する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a solid-state laser device excited by a semiconductor laser, and is used for recording and reproducing optical discs, laser printers, projection TVs, and the like.

(従来の技術) 一般に、半導体レーザはスペクトル幅が狭く高効率であ
り、発振波長をNd:YAG結晶等の光励起固体レーザ
の吸収波長に一致させることによって、効率よく励起で
きるところから、近年、従来の励起ランプに代る固体レ
ーザ励起用光源として注目を集めている。
(Prior Art) In general, semiconductor lasers have a narrow spectrum width and high efficiency, and can be excited efficiently by matching the oscillation wavelength to the absorption wavelength of an optically pumped solid-state laser such as an Nd:YAG crystal. It is attracting attention as a light source for solid-state laser excitation in place of excitation lamps.

また、Nd:YAGレーザ光の高調波は可視光レーザ光
として知られており、Nd:YAG結晶を半導体レーザ
光により励起し、その第2高調波を発生する試みが行な
われている。
Further, harmonics of Nd:YAG laser light are known as visible laser light, and attempts have been made to generate second harmonics by exciting Nd:YAG crystals with semiconductor laser light.

Nd:YAGレーザ光の発振波長の1.06. (遷移
・4F□m  ’Ixzzz)はよく知られているが、
その他に0−94JIII (’ F372  ’ I
 5zz)や1.3JJ11 (’F3/2I 12/
i)でも発振する。1,34.1.06戸、 0.94
−の各波長の第2高調波は順に、0.654 、0.5
3g 。
The oscillation wavelength of Nd:YAG laser light is 1.06. (Transition・4F□m 'Ixzzz) is well known, but
In addition, 0-94JIII ('F372' I
5zz) and 1.3JJ11 ('F3/2I 12/
i) also oscillates. 1,34.1.06 houses, 0.94
- The second harmonic of each wavelength is 0.654, 0.5
3g.

0.47−となり、それぞれ、赤色、緑色、青色に相当
する波長である。
0.47-, which are wavelengths corresponding to red, green, and blue, respectively.

(発明が解決しようとする課題) 上記のように、Nd:YAGレーザの第2高調波は赤色
、緑色、青色のレーザ光として利用され得るが、各色の
レーザ光を得るには、その各波長を発振させるためのレ
ーザ共振器が必要で、レーザ共振器を構成する反射ミラ
ーの反射率を各波長ごとに合わせることになる。しかし
ながら、一つのNd:YAGレーザ装置において各波長
を出力することは困難な問題があった。
(Problem to be Solved by the Invention) As mentioned above, the second harmonic of the Nd:YAG laser can be used as red, green, and blue laser light, but in order to obtain laser light of each color, each wavelength of the A laser resonator is required to oscillate the light, and the reflectance of the reflecting mirrors that make up the laser resonator must be matched for each wavelength. However, there is a problem in that it is difficult to output each wavelength using one Nd:YAG laser device.

本発明は上述に鑑み、赤色、緑色、青色に相当する各波
長を発振する半導体レーザ励起の固体レーザ装置の提供
を目的とする。
In view of the above, an object of the present invention is to provide a solid-state laser device pumped by a semiconductor laser that oscillates wavelengths corresponding to red, green, and blue.

(課題を解決するための手段) 本発明は上記の目的を1反射率の異なる反射ミラーを複
数配列した、回動可能に構成した円板ミラー一対の間に
、固体レーザ結晶と非線形光学結晶を配置し、半導体レ
ーザ光を用いて上記固体レーザ結晶を上記円板ミラーの
一方の側から励起することにより、上記反射ミラーの選
択により決まる波長のレーザ発振を行なわせて達成する
(Means for Solving the Problems) The present invention achieves the above-mentioned object by installing a solid-state laser crystal and a nonlinear optical crystal between a pair of rotatably configured disc mirrors in which a plurality of reflective mirrors having different reflectances are arranged. By exciting the solid-state laser crystal from one side of the disc mirror using a semiconductor laser beam, laser oscillation with a wavelength determined by the selection of the reflecting mirror is achieved.

(作 用) 本発明によれば、簡単な構成によって赤色、緑色、青色
等の異なる発振レーザ出力を容易に得ることが可能にな
る。
(Function) According to the present invention, different oscillation laser outputs such as red, green, and blue can be easily obtained with a simple configuration.

(実施例) 以下、本発明を図面を用いて実施例により説明する。(Example) Hereinafter, the present invention will be explained by examples using the drawings.

第1図は本発明の一実施例の半導体レーザ励起固体レー
ザ装置の分解斜視図、第2図(a)、 (b)はそれぞ
れ、第1図の側面図、および要部の反射ミラーの正面図
である6両図において1は長さ10m+。
FIG. 1 is an exploded perspective view of a semiconductor laser pumped solid-state laser device according to an embodiment of the present invention, and FIGS. 2(a) and 2(b) are a side view of FIG. 1 and a front view of a main part of a reflecting mirror, respectively. In the 6-car diagram, 1 is 10m+ long.

直径IIのNd:YAGロッド、2は31角のKTP結
晶の非線形光学結晶であり、これらNd:YAGロッド
1とKTP結晶2を挟んで両側に、一対のミラー、励起
側円板ミラー3と出力側円板ミラー4を、50m間隔で
対向させてレーザ共振器を構成しており、励起側円板ミ
ラー3の外側から集光レンズ5により、半導体レーザ6
の発光出力をNd:YAGロッド1の端面に集光させ入
力している。
The Nd:YAG rod 2 with a diameter of II is a nonlinear optical crystal of a 31-sided KTP crystal, and on both sides of the Nd:YAG rod 1 and KTP crystal 2 are a pair of mirrors, an excitation-side disc mirror 3 and an output. The side disc mirrors 4 are opposed to each other at intervals of 50 m to form a laser resonator, and the semiconductor laser 6 is
The light emission output is focused on the end face of the Nd:YAG rod 1 and inputted.

この実施例では発振波長807n+mの、出力100m
Wの半導体レーザ6を使用して励起させた6励起側円板
ミラー3、出射側円板ミラー4はそれぞれ、円板につい
て3枚の反射ミラーが円板の中心を中心とした1つの円
の円周上に配列されており、反射率は次のように設定さ
れている。
In this example, the oscillation wavelength is 807n+m and the output is 100m.
The excitation-side disc mirror 3 and the exit-side disc mirror 4 are each excited using a W semiconductor laser 6, and each of the three reflecting mirrors forms a circle centered on the center of the disc. They are arranged on the circumference, and the reflectance is set as follows.

すなわち励起側円板ミラー3は、3a、3bおよび3c
の3個の反射ミラーを有し、反射ミラー3aは波長0.
81umARコート(無反射コート)、波長0.947
71118 Rml−ト(高反射コート)、波長0.4
7JJIIHRコートが施されており、また反射ミラー
3bは、波長0,81. A Rコート、波長1.06
戸HRコート。
That is, the excitation side disc mirror 3 includes 3a, 3b, and 3c.
The reflecting mirror 3a has a wavelength of 0.
81umAR coat (non-reflective coat), wavelength 0.947
71118 Rml-to (high reflection coating), wavelength 0.4
7JJIIHR coating is applied, and the reflecting mirror 3b has wavelengths of 0, 81, . A R coat, wavelength 1.06
Door HR coat.

波長0.53PHRコートを施しており、また反射ミラ
ー3cは波長0.817a+ A Rコート、波長1.
3JIIIHRコート、波長0.65. HRコートが
施されている。
It has a wavelength of 0.53 PHR coating, and the reflecting mirror 3c has a wavelength of 0.817a+AR coating and a wavelength of 1.
3JIIIHR coat, wavelength 0.65. HR coated.

また、同様に出射側円板ミラー4は、4a、 4bおよ
び4cの3個の反射ミラーを有しており、反射ミラー4
aは、波長0.944 HRコート、波長0.47. 
A Rコートが施され、反射ミラー4bは波長1.06
. HRコート、波長0.53. A Rコートを施さ
れ、また反射ミラー4Cは波長1.3.)(Rコート、
波長0.65. A Rコートが施されている。
Similarly, the output side disc mirror 4 has three reflecting mirrors 4a, 4b, and 4c.
a is a wavelength of 0.944 HR coat, a wavelength of 0.47.
A R coating is applied, and the reflection mirror 4b has a wavelength of 1.06.
.. HR coat, wavelength 0.53. AR coating is applied, and the reflecting mirror 4C has a wavelength of 1.3. ) (R coat,
Wavelength 0.65. AR coated.

励起側円板ミラー3、出射側円板ミラー4の各々は傾き
の微調整が可能で発振各波長に調整されて、その時の各
波長の出力が一定になるように上記反射ミラーの反射率
が設定されている。
Each of the excitation-side disc mirror 3 and the output-side disc mirror 4 can be finely adjusted in tilt and adjusted to each oscillation wavelength, and the reflectance of the reflection mirror is adjusted so that the output of each wavelength at that time is constant. It is set.

第3図は第1図の装置を、出力100mWの半導体レー
ザ6により励起したときの、各波長における発振スペク
トルを示し、縦軸は発振強度(mW)、横軸は波長(I
M)である。
FIG. 3 shows the oscillation spectrum at each wavelength when the device shown in FIG. 1 is excited by the semiconductor laser 6 with an output of 100 mW.
M).

本発明はこのように赤、緑、青の各波長で1mWの発振
出力が得られ、各波長ともTEM、。モードの安定な発
振であった。
In this way, the present invention can obtain an oscillation output of 1 mW at each of the red, green, and blue wavelengths, and each wavelength is a TEM. The mode was stable oscillation.

(発明の効果) 以上、説明して明らかなように本発明の半導体レーザ励
起固体レーザ装置は、発振波長に応じた反射率の反射ミ
ラーを、同一円板上に円周的に配置してなる円板ミラー
を回転させて、反射ミラーしたがって発振波長を選択す
ることにより、一つの、しかも小形の装置で異なる波長
の赤、緑および青の3原色の発振等が可能であるから、
プロジェクションTV、光ディスクの記録再生、レーザ
プリンタ等に用いて大きな効果が得られる。
(Effects of the Invention) As is clear from the above description, the semiconductor laser pumped solid-state laser device of the present invention is constructed by disposing reflective mirrors having reflectances corresponding to the oscillation wavelength circumferentially on the same disk. By rotating the disk mirror and selecting the reflection mirror and therefore the oscillation wavelength, it is possible to oscillate the three primary colors of red, green, and blue at different wavelengths with one small device.
Great effects can be obtained when used in projection TVs, optical disk recording/reproduction, laser printers, etc.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の一実施例を説明する半導体レーザ励起
固体レーザ装置の分解斜視図、第2図(a)、 (b)
は第1図の側面図および要部正面図、第3図は本発明の
一実施例の効果を説明する発振スペクトルを示す図であ
る。 1 ・・・ Nd:YAGロッド、 2 ・・・KTP
結晶、 3 ・・・励起側円板ミラー、 4・・・出射
側円板ミラー、 5 ・・・集光レンズ、 6 ・・・
半導体レーザ。
FIG. 1 is an exploded perspective view of a semiconductor laser pumped solid-state laser device illustrating an embodiment of the present invention, and FIGS. 2(a) and (b)
FIG. 3 is a side view and a front view of main parts of FIG. 1, and FIG. 3 is a diagram showing an oscillation spectrum for explaining the effects of an embodiment of the present invention. 1...Nd:YAG rod, 2...KTP
Crystal, 3...Excitation side disc mirror, 4...Emission side disc mirror, 5...Condensing lens, 6...
semiconductor laser.

Claims (1)

【特許請求の範囲】[Claims] 反射率の異なる反射ミラーを複数配列した、回動可能に
構成した円板ミラー一対の間に、固体レーザ結晶と非線
形光学結晶を配置し、半導体レーザ光を用いて上記固体
レーザ結晶を上記円板ミラーの一方の側から励起するこ
とにより、上記反射ミラーの選択により決まる波長のレ
ーザ発振を行なわせることを特徴とする半導体レーザ励
起固体レーザ装置。
A solid-state laser crystal and a nonlinear optical crystal are arranged between a pair of rotatable disk mirrors in which a plurality of reflection mirrors with different reflectances are arranged, and the solid-state laser crystal is connected to the disk using semiconductor laser light. 1. A semiconductor laser-excited solid-state laser device, characterized in that by exciting one side of the mirror, laser oscillation is performed at a wavelength determined by the selection of the reflecting mirror.
JP14543389A 1989-06-09 1989-06-09 Semiconductor laser excitation solid-state laser device Pending JPH0311778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14543389A JPH0311778A (en) 1989-06-09 1989-06-09 Semiconductor laser excitation solid-state laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14543389A JPH0311778A (en) 1989-06-09 1989-06-09 Semiconductor laser excitation solid-state laser device

Publications (1)

Publication Number Publication Date
JPH0311778A true JPH0311778A (en) 1991-01-21

Family

ID=15385134

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14543389A Pending JPH0311778A (en) 1989-06-09 1989-06-09 Semiconductor laser excitation solid-state laser device

Country Status (1)

Country Link
JP (1) JPH0311778A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5764663A (en) * 1995-11-30 1998-06-09 Nidek Co., Ltd. Laser apparatus
JP2012222207A (en) * 2011-04-11 2012-11-12 Canon Inc Laser device and photo-acoustic device
EP2763248A4 (en) * 2011-09-27 2015-09-02 Fujifilm Corp Laser source unit and optical acoustic image generation device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5764663A (en) * 1995-11-30 1998-06-09 Nidek Co., Ltd. Laser apparatus
JP2012222207A (en) * 2011-04-11 2012-11-12 Canon Inc Laser device and photo-acoustic device
EP2763248A4 (en) * 2011-09-27 2015-09-02 Fujifilm Corp Laser source unit and optical acoustic image generation device

Similar Documents

Publication Publication Date Title
EP0968552B1 (en) High power laser devices
JPH0311778A (en) Semiconductor laser excitation solid-state laser device
JPH06224504A (en) Laser light source device
JPH09152640A (en) Laser apparatus
JP3215317B2 (en) External cavity type tunable semiconductor laser
JP2003142759A (en) Fiber laser device and video display system using the same
JPH0652814B2 (en) Optical fiber-communication device
JPH033377A (en) Semiconductor laser pumping solid-state laser device
JPS6179286A (en) Laser diode and mode hopping prevention therefor
JPH04158588A (en) Semiconductor laser exciting solid laser device
JP2661771B2 (en) Semiconductor laser device
JPH05211363A (en) Laser oscillation device
JPH08102564A (en) Wavelength converting laser device
JP2666548B2 (en) Semiconductor laser pumped solid-state laser device
JP2661772B2 (en) Semiconductor laser device
JPH1070328A (en) Gas laser oscillator
JP2501694B2 (en) Second harmonic generator in solid-state laser equipment
JP2000091685A (en) Continuously tunable blue micro chip laser
JPH03292784A (en) Semiconductor laser excitation solid-state laser device
JP2015510273A (en) Laser architecture
JPH06175181A (en) Variable wavelength laser device
JPH0621549A (en) Semiconductor laser capable of changing wavelength and external resonance unit
JP4146207B2 (en) Nonlinear wavelength conversion laser device
JPH0758380A (en) Solid laser device
JPH0391979A (en) Semiconductor laser-excitated solid state laser device