WO1997008789A3 - Laser system - Google Patents

Laser system Download PDF

Info

Publication number
WO1997008789A3
WO1997008789A3 PCT/DE1996/001500 DE9601500W WO9708789A3 WO 1997008789 A3 WO1997008789 A3 WO 1997008789A3 DE 9601500 W DE9601500 W DE 9601500W WO 9708789 A3 WO9708789 A3 WO 9708789A3
Authority
WO
WIPO (PCT)
Prior art keywords
resonator
wall
reflection
active material
laser
Prior art date
Application number
PCT/DE1996/001500
Other languages
German (de)
French (fr)
Other versions
WO1997008789A2 (en
Inventor
Johann Luft
Original Assignee
Siemens Ag
Johann Luft
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 Siemens Ag, Johann Luft filed Critical Siemens Ag
Publication of WO1997008789A2 publication Critical patent/WO1997008789A2/en
Publication of WO1997008789A3 publication Critical patent/WO1997008789A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/0602—Crystal lasers or glass lasers
    • H01S3/061—Crystal lasers or glass lasers with elliptical or circular cross-section and elongated shape, e.g. rod
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S2301/00—Functional characteristics
    • H01S2301/02—ASE (amplified spontaneous emission), noise; Reduction thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/0619—Coatings, e.g. AR, HR, passivation layer
    • H01S3/0625—Coatings on surfaces other than the end-faces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09—Processes or apparatus for excitation, e.g. pumping
    • H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094084—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light with pump light recycling, i.e. with reinjection of the unused pump light, e.g. by reflectors or circulators

Abstract

The invention concerns a laser system with an active material (3) located within a resonator (2) and in which at least part of the outer wall (4, 5) of the resonator has a highly reflecting or partly reflecting mirror. The reflection-reducing and/or absorbent coating (6) comprises a material which cuts down reflection of the laser light (9) and/or absorbs it and/or has a refractive index matched to that of the active material. In addition, the outer wall of the resonator (2) has a window (7) through which pumping radiation (8) can be beamed into the active material, and the reflection-reducing and/or absorbent coating (6) is applied to essentially the whole of the surface of the resonator wall (4, 5), with the exception of the window (7) allowing pumping radiation (8) to be beamed in and with the exception of the laser-light output port (10).
PCT/DE1996/001500 1995-08-29 1996-08-09 Laser system WO1997008789A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19531756.4 1995-08-29
DE1995131756 DE19531756C1 (en) 1995-08-29 1995-08-29 Neodymium doped YAG laser system

Publications (2)

Publication Number Publication Date
WO1997008789A2 WO1997008789A2 (en) 1997-03-06
WO1997008789A3 true WO1997008789A3 (en) 1997-04-10

Family

ID=7770666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1996/001500 WO1997008789A2 (en) 1995-08-29 1996-08-09 Laser system

Country Status (3)

Country Link
DE (1) DE19531756C1 (en)
TW (1) TW366614B (en)
WO (1) WO1997008789A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779937B1 (en) 1998-06-23 2000-08-11 Sofradim Production ADJUSTED ISOELASTIC PROSTHETIC FABRIC
FR2885266B1 (en) * 2005-04-28 2009-10-30 Cie Ind Des Lasers Cilas Sa ACTIVE ELEMENT FOR LASER SOURCE COMPRISING SUCH ACTIVE ELEMENT
FR2885267A1 (en) * 2005-04-28 2006-11-03 Cie Ind Des Lasers Cilas Sa Active element for laser source, has different crystals presenting low doping at upstream face of elongated core, and absorption unit arranged in core periphery for absorbing any radiation presenting wavelength of laser radiation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684980A (en) * 1970-10-13 1972-08-15 Texas Instruments Inc High effective absorption coefficient solid state laser rods
GB2215906A (en) * 1988-02-10 1989-09-27 Mitsubishi Electric Corp Laser device
US4899347A (en) * 1989-05-11 1990-02-06 General Electric Company Solid state laser gain medium with diamond coating
DE4207824A1 (en) * 1992-03-12 1993-09-23 Deutsche Aerospace Crystal for transversely excited solid laser or amplifier - is formed by optical contacting of doped optically non-absorbent coatings on all sides of square-section undoped absorbent core
US5335237A (en) * 1992-10-29 1994-08-02 The United States Of America As Represented By The United States Department Of Energy Parasitic oscillation suppression in solid state lasers using absorbing thin films
JPH07111350A (en) * 1993-10-12 1995-04-25 Nissin Electric Co Ltd Solid-state laser device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684980A (en) * 1970-10-13 1972-08-15 Texas Instruments Inc High effective absorption coefficient solid state laser rods
GB2215906A (en) * 1988-02-10 1989-09-27 Mitsubishi Electric Corp Laser device
US4899347A (en) * 1989-05-11 1990-02-06 General Electric Company Solid state laser gain medium with diamond coating
DE4207824A1 (en) * 1992-03-12 1993-09-23 Deutsche Aerospace Crystal for transversely excited solid laser or amplifier - is formed by optical contacting of doped optically non-absorbent coatings on all sides of square-section undoped absorbent core
US5335237A (en) * 1992-10-29 1994-08-02 The United States Of America As Represented By The United States Department Of Energy Parasitic oscillation suppression in solid state lasers using absorbing thin films
JPH07111350A (en) * 1993-10-12 1995-04-25 Nissin Electric Co Ltd Solid-state laser device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 95, no. 004 *

Also Published As

Publication number Publication date
DE19531756C1 (en) 1996-12-05
TW366614B (en) 1999-08-11
WO1997008789A2 (en) 1997-03-06

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