GB1269101A - A solid-state laser element - Google Patents
A solid-state laser elementInfo
- Publication number
- GB1269101A GB1269101A GB3360069A GB3360069A GB1269101A GB 1269101 A GB1269101 A GB 1269101A GB 3360069 A GB3360069 A GB 3360069A GB 3360069 A GB3360069 A GB 3360069A GB 1269101 A GB1269101 A GB 1269101A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- sio
- active medium
- ions
- pbo
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
-
- 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
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- 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
- H01S3/17—Solid materials amorphous, e.g. glass
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Computer Networks & Wireless Communication (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Lasers (AREA)
Abstract
1,269,101. Lasers. NIPPON SELFOC CO. Ltd. 3 July, 1969 [6 July, 1968; 18 Nov., 1968], No. 33600/69. Heading H1C, [Also in Divisions C1 and C4] A glass or plastics laser active medium has an inherent graded refractive index which decreases outwardly from its longitudinal axis, the grading being in accordance with a quadratic law and produced by a thermal ion substitution process. The active medium may be a glass fibre of about 0�2 mm. diameter formed, in weight per cent, of 20% Tl 2 O, 12% Na 2 O, 15% PbO, 3% Nd 2 O 3 , 2% UO 2 and 48% SiO 2 , the ion substitution being effected by immersing the fibre in a heated bath of potassium nitrate so as to produce a graded substitution of potassium ions for the thallium and sodium ions. An alternative is the use of 5% Nd 2 O 3 in the above composition and the omission of UO 2 . Alternative laser glasses are silicate glass, borate glass or phosphate glass which include activatable ions such as neodymium, ytterbium, erbium, samarium and holmium ions. Other suitable materials are SiO 2 -K 2 O-BaO glass or SiO 2 - K 2 O-PbO glass which is doped with neodymium. In a modification, Fig. 3 (not shown), a glass fibre formed in weight per cent, of 20% Tl 2 O, 12% NaO 2 , 16% PbO, 4% Nd 2 O 3 and 48% SiO 2 is inserted in and fused to a glass tube formed, in weight per cent, of 20% Tl 2 O, 12% Na 2 O, 20% PbO and 48% SiO 2 . In the compound active medium so formed, lasing is restricted to the core portion while the graded refractive index produced by ion substitution extends over the whole medium. It is stated that the graded refractive index restricts the loss of light transmitted through the active medium. A laser is shown in Fig. 4 in which the glass active medium 9 is in the form of a helix surrounding a straight optical pumping source 10. A cylindrical reflector (not shown) is optionally provided. The glass fibre active medium may be optically pumped by a source 15, Fig. 5, and form one or more amplifiers in an optical system comprising a laser oscillator 11, light guide portions 13 and a receiver 14. A single light guide formed of the graded refractive index fibre described may be used with doping by active ions restricted to the zones where amplification by optical pumping is to take place.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4730568 | 1968-07-06 | ||
| JP8425368 | 1968-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1269101A true GB1269101A (en) | 1972-04-06 |
Family
ID=26387473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3360069A Expired GB1269101A (en) | 1968-07-06 | 1969-07-03 | A solid-state laser element |
Country Status (4)
| Country | Link |
|---|---|
| FR (1) | FR2012446A1 (en) |
| GB (1) | GB1269101A (en) |
| NL (1) | NL6910362A (en) |
| SE (1) | SE358775B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228362A (en) * | 1989-02-21 | 1990-08-22 | Sun Microsystems Inc | Active fiber for optical signal transmission |
| GB2269933A (en) * | 1989-02-21 | 1994-02-23 | Sun Microsystems Inc | Active fiber for optical signal transmission |
| GB2272103A (en) * | 1989-02-21 | 1994-05-04 | Sun Microsystems Inc | Active fiber for optical signal transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8512980D0 (en) * | 1985-05-22 | 1985-06-26 | Pa Consulting Services | Fibre optic transmissions systems |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421097A (en) * | 1963-03-25 | 1969-01-07 | American Optical Corp | Laser amplifier having angularly disposed reflection reducing end surface |
-
1969
- 1969-07-01 SE SE935569A patent/SE358775B/xx unknown
- 1969-07-03 GB GB3360069A patent/GB1269101A/en not_active Expired
- 1969-07-04 NL NL6910362A patent/NL6910362A/xx unknown
- 1969-07-04 FR FR6922804A patent/FR2012446A1/fr not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2228362A (en) * | 1989-02-21 | 1990-08-22 | Sun Microsystems Inc | Active fiber for optical signal transmission |
| US4955685A (en) * | 1989-02-21 | 1990-09-11 | Sun Microsystems, Inc. | Active fiber for optical signal transmission |
| GB2269933A (en) * | 1989-02-21 | 1994-02-23 | Sun Microsystems Inc | Active fiber for optical signal transmission |
| GB2228362B (en) * | 1989-02-21 | 1994-04-06 | Sun Microsystems Inc | Data transmission system |
| GB2269933B (en) * | 1989-02-21 | 1994-05-04 | Sun Microsystems Inc | Active fiber for optical signal transmission |
| GB2272103A (en) * | 1989-02-21 | 1994-05-04 | Sun Microsystems Inc | Active fiber for optical signal transmission |
| GB2272103B (en) * | 1989-02-21 | 1994-12-07 | Sun Microsystems Inc | Active fiber for optical signal transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2012446A1 (en) | 1970-03-20 |
| DE1934141A1 (en) | 1970-07-02 |
| NL6910362A (en) | 1970-01-08 |
| SE358775B (en) | 1973-08-06 |
| DE1934141B2 (en) | 1973-02-01 |
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