GB1420932A – Lasers
– Google Patents
GB1420932A – Lasers
– Google Patents
Lasers
Info
Publication number
GB1420932A
GB1420932A
GB380172A
GB380172A
GB1420932A
GB 1420932 A
GB1420932 A
GB 1420932A
GB 380172 A
GB380172 A
GB 380172A
GB 380172 A
GB380172 A
GB 380172A
GB 1420932 A
GB1420932 A
GB 1420932A
Authority
GB
United Kingdom
Prior art keywords
combustion
closed loop
resonator
channel
detonation
Prior art date
1972-01-26
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
Application number
GB380172A
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.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
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.)
1972-01-26
Filing date
1972-01-26
Publication date
1976-01-14
1972-01-26
Application filed by Rolls Royce PLC
filed
Critical
Rolls Royce PLC
1972-01-26
Priority to GB380172A
priority
Critical
patent/GB1420932A/en
1973-01-23
Priority to DE19732303167
priority
patent/DE2303167C3/en
1973-01-25
Priority to FR7302597A
priority
patent/FR2169234B1/fr
1973-01-26
Priority to JP1095273A
priority
patent/JPS558831B2/ja
1973-01-26
Priority to IT1968273A
priority
patent/IT978531B/en
1976-01-14
Publication of GB1420932A
publication
Critical
patent/GB1420932A/en
1977-01-21
Priority to US05/761,206
priority
patent/US4097820A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H01S3/08—Construction or shape of optical resonators or components thereof
H01S3/081—Construction or shape of optical resonators or components thereof comprising three or more reflectors
H01S3/083—Ring lasers
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
H01S3/095—Processes or apparatus for excitation, e.g. pumping using chemical or thermal pumping
H01S3/0951—Processes or apparatus for excitation, e.g. pumping using chemical or thermal pumping by increasing the pressure in the laser gas medium
H01S3/0953—Gas dynamic lasers, i.e. with expansion of the laser gas medium to supersonic flow speeds
Abstract
1420932 Combustion apparatus of detonation type ROLLS-ROYCE (1971) Ltd 18 Jan 1973 [26 Jan 1972] 3801/72 Heading F1L [Also in Division H1] Laser radiation is produced by associating an electromagnetic wave resonator with a closed loop combustion channel in which at least one combustion-initiating detonation wave is circulated. The combustion channels are of the type described in Specifications 1069217 and 1213551, Figs. 1a, 1b, and 1c, respectively, and comprise a closed loop combustion chamber 19, 1 supplied with the mixture of an atomized fuel such as kerosene, and a pressurized gaseous reactant such as air, to produce laser action based on carbon dioxide, carbon monoxide or water transitions. The combustion chamber includes a detonation starter 31, and in Figs. 1a, 1b the fuel and reactant gases are passed into the chamber 19 between baffles 27 while the combustion gases are expelled between baffles 28. In Fig. 1c the combustible gases are introduced through ducts 2, 3 and the combustion gases expelled through a convergentdivergent nozzle 5. Several detonation waves may be circulated in the closed loop channel at the same time, Fig.2 (not shown). Stimulated emission may be obtained in the combustion gases behind a detonation wave, in which case infrared transmissive windows 9, Fig. 3c, and 11, Fig.4, are provided in the channel walls along the axis of the resonator. In Fig. 3c the resonator is formed by a mirror 7 and an apertured or partiallytransmissive output mirror 8, and its axis is transverse of the channel 1, while in Fig.4 the resonator formed by mirrors 12, 13 is elongated by arranging its axis to extend along a linear portion 10b of the closed loop channel 10. In an alternative arrangement the laser energy is obtained by expansion of the combustion gases from a nozzle 5, Fig. 3b, the resonator 7, 8 being arranged downstream of the nozzle and transverse of the gas flow. In a ring laser modification, Fig.5, the closed loop channel 16 has linear portions 16a-16d having nozzles directed towards a closed optical path formed by mirrors 14, 15. A further arrangement, Figs. 6b, 6c, comprises a closed loop channel the elongate portions 18a, 18b of which each comprise a respective nozzle directed in common to a region 21 along the optical axis, 25 of a resonator formed by mirrors 23, 24.
GB380172A
1972-01-26
1972-01-26
Lasers
Expired
GB1420932A
(en)
Priority Applications (6)
Application Number
Priority Date
Filing Date
Title
GB380172A
GB1420932A
(en)
1972-01-26
1972-01-26
Lasers
DE19732303167
DE2303167C3
(en)
1972-01-26
1973-01-23
Method and device for generating laser radiation by means of a detonation wave
FR7302597A
FR2169234B1
(en)
1972-01-26
1973-01-25
JP1095273A
JPS558831B2
(en)
1972-01-26
1973-01-26
IT1968273A
IT978531B
(en)
1972-01-26
1973-01-26
METHOD AND DEVICE FOR PRODUCING A LASER ACTION IN A GASEOUS MEDIA
US05/761,206
US4097820A
(en)
1972-01-26
1977-01-21
Lasers
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB380172A
GB1420932A
(en)
1972-01-26
1972-01-26
Lasers
Publications (1)
Publication Number
Publication Date
GB1420932A
true
GB1420932A
(en)
1976-01-14
Family
ID=9765156
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB380172A
Expired
GB1420932A
(en)
1972-01-26
1972-01-26
Lasers
Country Status (5)
Country
Link
JP
(1)
JPS558831B2
(en)
DE
(1)
DE2303167C3
(en)
FR
(1)
FR2169234B1
(en)
GB
(1)
GB1420932A
(en)
IT
(1)
IT978531B
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3982205A
(en)
*
1974-10-17
1976-09-21
Avco Everett Research Laboratory, Inc.
Method for producing a lasable gaseous mixture for use in and operation of electron beam-sustainer stabilized carbon dioxide lasers
1972
1972-01-26
GB
GB380172A
patent/GB1420932A/en
not_active
Expired
1973
1973-01-23
DE
DE19732303167
patent/DE2303167C3/en
not_active
Expired
1973-01-25
FR
FR7302597A
patent/FR2169234B1/fr
not_active
Expired
1973-01-26
JP
JP1095273A
patent/JPS558831B2/ja
not_active
Expired
1973-01-26
IT
IT1968273A
patent/IT978531B/en
active
Also Published As
Publication number
Publication date
DE2303167C3
(en)
1979-05-23
DE2303167B2
(en)
1978-09-21
IT978531B
(en)
1974-09-20
FR2169234A1
(en)
1973-09-07
JPS4884587A
(en)
1973-11-09
DE2303167A1
(en)
1973-08-16
JPS558831B2
(en)
1980-03-06
FR2169234B1
(en)
1976-09-10
Similar Documents
Publication
Publication Date
Title
US4206429A
(en)
1980-06-03
Gas dynamic mixing laser
US5983871A
(en)
1999-11-16
Ignition system for an internal combustion engine
US3899749A
(en)
1975-08-12
Gas dynamic lasers
GB1537388A
(en)
1978-12-29
16 micron output wavelength co2 laser system
CN110707521A
(en)
2020-01-17
Premixed carbon dioxide pneumatic laser driven by continuous rotation detonation rocket combustion
US5223651A
(en)
1993-06-29
Supersonic combustion engine and method of combustion initiation and distribution
US5384802A
(en)
1995-01-24
Laser apparatus
GB1534929A
(en)
1978-12-06
Method and apparatus for generating coherent 14 and 16 micron radiation
SU500776A3
(en)
1976-01-25
Magnetogasdynamic energy converter
US3832650A
(en)
1974-08-27
Supersonic chemical transfer laser
US4097820A
(en)
1978-06-27
Lasers
Meinzer
1972
Experimental Gas Dynamic Laser Studies
US3819321A
(en)
1974-06-25
Cooled combustor-nozzle assembly
GB1420932A
(en)
1976-01-14
Lasers
US3594658A
(en)
1971-07-20
High-pressure laser having thermal-pumping means
GB1394498A
(en)
1975-05-14
Gaseous flux laser generator
US4013976A
(en)
1977-03-22
Gas dynamic lasers
Croshko et al.
1975
Population inversion and gain distribution in supersonic mixed flow systems
CN110739602B
(en)
2020-12-29
Pre-mixing type carbon dioxide pneumatic laser driven by pulse detonation rocket combustion
US4236123A
(en)
1980-11-25
High-power CO laser
US3566297A
(en)
1971-02-23
Laser device
CN110739600B
(en)
2020-12-29
Pre-mixing type carbon dioxide pneumatic laser driven by air-breathing type pulse detonation combustion
GB1605323A
(en)
1990-07-11
Gaseous flux laser
GB1524730A
(en)
1978-09-13
Dynamic gas laser
US3900802A
(en)
1975-08-19
Two stage gas dynamic laser
Legal Events
Date
Code
Title
Description
1976-05-26
PS
Patent sealed
1982-08-18
PCNP
Patent ceased through non-payment of renewal fee
