WO1986001045A1 - Absorbant saturable pour systeme a laser - Google Patents

Absorbant saturable pour systeme a laser Download PDF

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Publication number
WO1986001045A1
WO1986001045A1 PCT/IT1985/000020 IT8500020W WO8601045A1 WO 1986001045 A1 WO1986001045 A1 WO 1986001045A1 IT 8500020 W IT8500020 W IT 8500020W WO 8601045 A1 WO8601045 A1 WO 8601045A1
Authority
WO
WIPO (PCT)
Prior art keywords
laser
cell
optical cell
optical
fact
Prior art date
Application number
PCT/IT1985/000020
Other languages
English (en)
Inventor
Alfredo Bianchi
Antonio Landoni
Giampiero Giuliani
Original Assignee
Selenia, Industrie Elettroniche Associate
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 Selenia, Industrie Elettroniche Associate filed Critical Selenia, Industrie Elettroniche Associate
Publication of WO1986001045A1 publication Critical patent/WO1986001045A1/fr

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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
    • H01S3/1061—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using a variable absorption device
    • 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
    • H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
    • H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
    • H01S3/1123—Q-switching
    • H01S3/113—Q-switching using intracavity saturable absorbers
    • 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
    • H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16—Solid materials
    • H01S3/168—Solid materials using an organic dye dispersed in a solid matrix

Definitions

  • the invention is concerned with an optical cell containing one or more organic dyes (such as BDN-14 DIS-KODAK) dissolved in a solid substance, preferably catalyzing glue ' (such as HARTEL INTERPRISES 17024 B) set between two plates, (1) and (2), of suitably transparent material.
  • organic dyes such as BDN-14 DIS-KODAK
  • catalyzing glue ' such as HARTEL INTERPRISES 17024 B
  • This invention belonges to the field of optical systems, and, more precisely, to pulsed and continuous laser optics.
  • the purpose of the present invention is to eliminate the inconveniences mentioned above.
  • the invention as
  • Figure 1 shows a schematic of the optical cell, where: (1) and (2) are the plates of suitable transparent material (glass, plastic, saffire etc.);
  • (3) is a solid substance, preferably • optically and/or chemically catalyzing glue into which a suitable molar concentration of the organic dye adopted is dissolved.
  • S , S , S , S show the surfaces which have been optically
  • the organic dye may be dissolved in the glue in the fluid state using a suitable solvent, such as acetone, then the resulting composite is filtered with porous membranes and centrif ⁇ ged to eliminate the undissolved parts of the organic dye.
  • the fluid resulting may be again mixed with a further addition of glue without any dye to obtain the desired molar concentration.
  • the composite obtained when chemical catalyzing glues are used, greed of the solvent used, is placed under a vacuum bell at suitable temperature (such as 50°).
  • suitable temperature such as 50°
  • the composite (3) is then inserted between the two plates (1) and (2) so as to build the optical cell.
  • the plates, before the glue sets, are optically designed by means of an optical interferometer.
  • the optical cell obtained may find a number of applications:
  • the cell When inserted into a laser cavity, the cell can give way to stimulated emission of coherent pulses having a duration of 1 to 30 ns with the same characteristics of a Q switch;
  • the pulse is made up of a train of pulses ranging between 10 and 100 ns, each one lasting from
  • the cell suitably primed through a flash lamp or an other laser, is itself a light source and is therefore active material of the laser cavity into which it is inserted.
  • This optical cell as described, has the following advantages: - different types of application;

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Lasers (AREA)

Abstract

Une cellule optique contient un ou plusieurs colorants organiques dissous dans une substance solide, de préférence une colle de catalyse, insérée entre deux plaques (1) et (2) en un matériau approprié transparent à la lumière laser. Cette cellule peut être utilisée dans une cavité à laser, comme dispositif optique d'absorption saturable, afin d'obtenir un "commutateur Q" et/ou un "verrouillage de mode". Cette cellule peut également être utilisée comme une source active, par exemple comme un émetteur de lumière laser dans une cavité de résonance, optiquement amorcé par une lampe, par un autre laser ou par d'autres moyens.
PCT/IT1985/000020 1984-07-27 1985-07-24 Absorbant saturable pour systeme a laser WO1986001045A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT48643/84A IT1199169B (it) 1984-07-27 1984-07-27 Cella ottica contenente coloranti organici disciolti in agglomerato solido da utilizzare in cavita'laser come assorbitore saturabile ovvero materiale attivo
IT48643A/84 1984-07-27

Publications (1)

Publication Number Publication Date
WO1986001045A1 true WO1986001045A1 (fr) 1986-02-13

Family

ID=11267808

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1985/000020 WO1986001045A1 (fr) 1984-07-27 1985-07-24 Absorbant saturable pour systeme a laser

Country Status (3)

Country Link
EP (1) EP0192649A1 (fr)
IT (1) IT1199169B (fr)
WO (1) WO1986001045A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201687A2 (fr) * 1985-03-18 1986-11-20 SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE S.p.A. Résonateur pour laser à grande puissance avec modulation du facteur de qualité
CN102842846A (zh) * 2011-11-16 2012-12-26 天津市激光技术研究所 提高染料调q薄膜片激光透过率的方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1529970A (en) * 1977-08-24 1978-10-25 Emi Ltd Laser q-switch manufacture
US4191931A (en) * 1978-02-06 1980-03-04 Sanders Associates, Inc. Cooled laser q-switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1529970A (en) * 1977-08-24 1978-10-25 Emi Ltd Laser q-switch manufacture
US4191931A (en) * 1978-02-06 1980-03-04 Sanders Associates, Inc. Cooled laser q-switch

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure Bulletin, Volume 15, Nr. 8, January 1973, IBM CO., New York, (US) D.E. JOHNSON et al.: "Plastic Q - Switch for Gaint Pulse Lasers", page 2619, see lines 7-14 *
Soviet Journal of Quantum Electronics, Volume 12, Nr. 12, December 1982, American Institute of Physics, New York, (US) V.I. BEZRODNYL et al.: "Polymer Active and Passive Laser Elements made of Organic Dyes", pages 1602-1607, see page 1603, column 1, lines 30-47; page 1604, column 1, lines 1-5 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201687A2 (fr) * 1985-03-18 1986-11-20 SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE S.p.A. Résonateur pour laser à grande puissance avec modulation du facteur de qualité
EP0201687A3 (fr) * 1985-03-18 1989-02-08 SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE S.p.A. Résonateur pour laser à grande puissance avec modulation du facteur de qualité
CN102842846A (zh) * 2011-11-16 2012-12-26 天津市激光技术研究所 提高染料调q薄膜片激光透过率的方法

Also Published As

Publication number Publication date
IT1199169B (it) 1988-12-30
EP0192649A1 (fr) 1986-09-03
IT8448643A0 (it) 1984-07-27

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