CS928986A1 - Zarizeni pro selektivni modulaci intenzity a ziskavani impulsu zareni urcite delky vln vysokovykonnych co laseru - Google Patents

Zarizeni pro selektivni modulaci intenzity a ziskavani impulsu zareni urcite delky vln vysokovykonnych co laseru Download PDF

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Publication number
CS928986A1
CS928986A1 CS869289A CS928986A CS928986A1 CS 928986 A1 CS928986 A1 CS 928986A1 CS 869289 A CS869289 A CS 869289A CS 928986 A CS928986 A CS 928986A CS 928986 A1 CS928986 A1 CS 928986A1
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Czechoslovakia
Prior art keywords
laser
power
resonator
ziskavani
zareni
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Application number
CS869289A
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English (en)
Inventor
Manfred Dr Pohler
Gissbert Dr Staupendahl
Richard Wittig
Original Assignee
Poehler Manfred Dr
Staupendahl Gisbert Dr
Richard Wittig
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Application filed by Poehler Manfred Dr, Staupendahl Gisbert Dr, Richard Wittig filed Critical Poehler Manfred Dr
Publication of CS928986A1 publication Critical patent/CS928986A1/cs

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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
    • H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
    • H01S3/139—Stabilisation of laser output parameters, e.g. frequency or amplitude by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • 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
    • H01S3/105—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the mutual position or the reflecting properties of the reflectors of the cavity, e.g. by controlling the cavity length
    • 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
    • H01S3/1062—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 controlled passive interferometer, e.g. a Fabry-Perot etalon
    • 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
    • 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
    • H01S3/22—Gases
    • H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
    • H01S3/2232—Carbon dioxide (CO2) or monoxide [CO]

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Laser Beam Processing (AREA)

Description

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Ha3BaHHue npodJieMH peuiaioTCfí corjiacHO Η3θΰρθτθΗΗΐο τηκημciiocoóom, hto 3Ha*íeHHe OTpaaaTejiLHoíí cjiocoóhocth bhóh-paeTca He paBHHM I, a 3Ηηηητ6λβηο MeHBiue, hto 03HanaeT,BO-nepBHX, 9T0 qacTHHHO-OTpa«aioujee 3epKaJio aojdkho cocto- B htb H3 npo3paHHoro MaTepnajia h, bo-btophx, na odonx bhxo- #ax pe3OHaTopa AOJmei-i ocymecTBJíHTBCH buboa H3JiyneHHH, κοτο-poe MoaeT duTB HonoJiB30BaHO. Eoah TpedyeTcn nojtynHTB oahhpaóoHHíí Jiyn, ποτβρκ κοτοροΓΟ H3-3a b npHHHHne HeKejiaTejiB-Horo "noóoHHoro” Jiyna no bo3MOíkhqcth Majiu, 3HaneHHeAOJDkho duTB 0TpnnaT6JiBH0, ecAH, HanpHMep, TpeóyeTcn, hto-tín dun ocymecTBJíeH bhboa ochobhoíí nacTH Jia3epnoro H3JiyHe~ Μ HHH BHXOAHHM 3θρΚΟΟΜ p©3OHaTOpa C IIOCTOHHHOÍí 0Tp8JKaT6AB— Ηθϋ CnOCOÓHOCTBK) Itj . &amp;ΠΗ ΠρΗΓΟΛΗΟΓΟ K HCn0JIB30BaHHK) HHTep-φθροΜβτρη 3HaneHHe R2 μο«θτ Η3ΜβΗΗΤΒ0Η b HHTepBajie0<JR2<0,9. BHÓHpaeTCH corjiacHO HSoópeTeHHio ksk mokhoM6HBIUHM, HO ΠΟΜΘΗΒΙΠθΗ Μβρβ TaKOÍí ΒβΛΗΗΗΗΗ, HTOdu ΟόθΟΠθ-hhtb cTaÓHJiBHOCTB padoTH Jia3epa, ecjiH 3ηηηθηηθ R2 αοοτητοί—ho bojihko , npeuMymecTBeHHO doJimie 0,5. BjiaroAapa οοοτβθτοτ-ByiomeMy Budopy ít,, BO-nepsux, MoryT óhtb yMeHBiusHH odumeποτβρπ pe3OHaTopa, TaK hto nopor B03dyjfCAeHHH Jia3epa JieoTb noJiHOCTBio de3onacHOM αλη íocthpobkh ΗΗΤβρφθροΜβτρη Anana-3OHe, Hanp., πρκ R2 *= 0,5; bo-btophx, noTepn mouihocth,B03HHKaioiiiHe H3-3a oTBo^a BToporo, óojiee cJiadoro jiyna qepe3ΗΗΤθρφθρΟΜΘΤρ, CHOaiQTCH RO MKHHMyMa Η, Β~ΤρΘΤΒΗΧ, AOCTK-raeTca το, mto βθοβ pe3onaTop b coctohhhh bhcokhx otímwxnoTepB cR2 = 0, T.e, b βηκηιοηθηηομ coctohhhh, w3-3a MaJio-ro 3HaneHHfl Hj BKraoneH npaKTHnecKH na nojinoe nponycKaHHe, τακ ητο 3φφθκτ oópaTHOíí cbh3H οτρβΜβΗΗΟΓΟ οτ oópaóaTHBae-ΜΟΓΟ Η3Λβ,Π0Ή H3JiyqeHHH ΟΒβΑθΗ £0 MHHHMyMa, T.e. BO3óyxneHHejiaeepa OTpasceHHHM H3syqeHHeM b stom coctohhhh οτβηοβητοηΗΘΒ03Μ03ΚΗΗΜ.
OÓOÓma# ΒΗΒΙβΗ3Λ0ΜβΗΗ0θ, OIIOCOÓ COIViaCHO Η300ρθΤ6ΗΗΙΟ ΟΤ£Η«-qaeTCtf τθμ, hto ηβοτοτηο—ceseKTHBHHfí θλθμθητ ycTaHaaraiBa-θτοη cHawia Ha npoH3B04BHyio, ho nocTOHHHyio ssHHy boshh,h 3aT3M paóoqHíi w sa3epa προτβκββτ TaK, hto cHanasa R2ycTanaBJíHBaeTCH κβκ moscho MeHLiueň, npeuMymecTBeHHo yMeHb-niaeTCH ΛΟ Hysa, τακ hto H3~3a oniícaHHoro βηιιιθ BHóopa 3Ha-ΗβΗΗΗ Itj KaK BHyTpeHHHH, THK H ΒΗβΙΠΗΗΗ OÓpaTHaH CBH3ByMeHBiuaeTCH ηηοτολβκο, hto Jia3ep πβρβοτββτ reHepHpoBaTB , HMIiyJIbGHo B CJiejonomeM máry cnocoóa nepeMeHHan oipajKaTesiHan cnocoó-HOCTB R2 B03pa0TaeT CKaHK00Ópa3H0 so TBKOŽ βθληηηηη, hto W npeHMymecTBeHHo npn R2>0,5 BHyTpeHHHH oópaTHan. obhsb b ΟΟΗΘΤΒΗΗΗ C ΠΟΟΤΟΗΗΗΟβ ΟΤρ&amp;ΚΗΤβΛΒΗΟίί CnOCOÓHOCTBIO R^ΟΤβΗΟΒΗΤΟΗ ΛΟΟΤΒΤΟΗΗΟίί £JIH ΤΟΓΟ, HTOÓH ΠρβΒΚΟΗΤΒ ΠΟρΟΓ O BosdyameHHH sasepa η nepesecTH ero b οοοτοηηηθ hojihoé paóoTOcnocoÓHocTH, TaK htoóh Ha oóohx BHXosax pe3onaToparenepapoBajiocL· jia3epHoe H3JiyneHHe. M, HaKOHeu, nocsesHHíi uiar cnocoóa 3aKJnonaeTCH b tom, htonocpe&amp;cTBOM cKanKooópa3Horo ποποθημη R2 (πρθημυ^θοτβθηηοποητη so Hyjin) BO-nepBnx, οπητβ npeptiBaeTCH HopMasBHoe(^yHKHHOHHpoBaHíie sa3epa h, bo-btophx, nos βο3£ΘηοτβηθμΒΗβΙΠΗβδ OÓpaTHOH CBH3H ΗΟ£ΗΒΗΗΚ)ΤΟΗ napa3HTHHe OCIÍHJUIHHKHH3JiyneHHH, T.e. sa3ep nepexosHT b ncxosHoe οοοτοηηηθ, honiícaHHtie marH woryT óhtb ποβτορθηη npn yneTe nponeccaHaicaHKH nu C03saHH0ii ΗΗΒβροκΗ načešeΗΗοοτβϋ. 8 BHCOKaa 9$$6kthbhoctb cnocoóa corJiacHO Η3θόρβτβΗΗΐο no3-ΒΟΛΗΘΤ Η0Π0ΛΒ30ΒΒΤΒ BC6 ΗΜΘΚΜίμίβΟΗ ΠΟΤβΗφϊΒΛΒΗΗΘ B03M0JK-HOOTH MOIUHHX C0g-Jia3epOB &amp;HH ΠΟΛΥΗΘΗΗΗ HMnyJIBCOB H3Jiy-ΗΘΗΗΗ Hpe3BHHaíÍHO BHCOKOÍÍ MOIUHOCTH. M3B6CTHO, hto ÓJiaroAapn HMnyJiBCHoii nosáče θηθργηη HaKan-kh COg-JiaaepoB bhcokoíí moiuhocth yMeHBiuaeTCH TepMHqecKanHarpyeKa ra30B0íí cMecn 4a3epa, h tbm caMHM MoryT óhtb nojiy-qeHH HMnyJiLCH H3^yqeHHH, πηκοββη moiuhoctb κοτορπχ bo μηογοpa3 npeBHiuaeT moiuhoctb Jia3epa, paóoTaiomero πρκ HenpepnB-HOÍi ΠΟ^Ηβ TOKa, θΤΟΤ φΒΚΤ ΜΟΜβΤ ÓHTB Η0Π0ΛΒ30ΒΒΗ b Mom-hhx COg-Jiasepax cjiejuyioiuHM oópa3OM, B to bpgmh, kbk rene-ρΚρΟΒβΗΗθ Jia3epHOrO Η3ΛγΗΘΗΗΗ npepHBaeTCH ΠΟΟρββΟΤΒΟΜcneuHaJiBHoro ΗΗΤβρφβροΜβτρη (τ.β. R2< rs> aKTHBHaH θΡθΑΗ4a3epa πρηβολητοη KMnyjiBCOM tokb b coctohhhg MaKCHMajiBHoMΗΗΒβροΗϋ nacejieHHOOTeíí. B 9τοτ μομθητ oóiuhg ποτθρκ Jia3epaΠΟΟρβΛΟΤΒΟΜ CneiíKaJIhHOrO ΗΗΤθρφβρΟΜβΤρΒ CKaHK00Ópa3H0cHH«aioTCfl flo TaKofi οτθπθηη, hto Jia3ep nepexonHT cboh no-por h H3JiyqaeT ημπυλβοη μβκοημβλβηο bhcokoíí moiuhocth.MaRCHMaJiLHan nacTOTa HMnyuiBcoB tokb οοοτββληοτ okojio 2,5 kTií. T.k. cneuHajiBHHÍí ΗΗΤβρφβροΜθτρ paóoTaeT TanutéHa 9T0ií qacTOTe, b θτομ jyiana30He οπηοηηηημ cnocoóoM mo-ryT óhtb noJiyneHH ημπυλβοη, moiuhoctb κοτορκχ b hcckojibkocot pa3 npeBHiuaeT cpejmioio moiuhoctb Jia3epa. BajRHHM πρκ9TOM HBJIHeTCH ρβ3ΛΗ3ΒΙξΗΗ TOHHO ΟΠρβΑΘΛβΗΗΟΗ ΒρβΜβΗΗΟβ3aflepjKKH Mexny HMnyuiBCOM ηηκβηκη βηοοκογο HanpwKeHHíi hynpaBJUWiuHM HMnyjiBcoM cnenHaJiBHoro ΗΗΤβρφθροΜβτρε c no-moiubio cneííHaJiBHoro sjíeKTpoHHoro ÓJioKa. Euiaronapn btomyodecneHMBaeTCH to, hto R2 npeBHiuaeT nopor Rg tohho b totμομθητ, Korná nocpeACTBOM MMnyjiBca ηβκβηκη jWTurayTaMaKCHMajiBHaH HHBepcHH HacejieHHOcTeH. 9
ΠρΗΜβρ OOymeCTBJíeHHH H30Óp6TeHHH ΜβοόρβτθΗΗβ otítHCHfleTca noApoóHee c πομοηιβιο cJiejtyiomeronpuMepa ero ocynjecTBJíeHHfl. Φηγ. I oJDooTpjípyeT πρΗΜθΗθΗΗθ cnocoóa jyw jia3epHoií oópa-óotkh M&amp;Tepn&amp;JioB, feepHaa ra3opa3paAHaH TpyóKa (I) c y3~KOÍt yrJIOBO# ΟΘΛβΚΤΗΒΗΟΟΤΒΜ, ΠρβΗΚφΙΙβΟΤΒβΗΗΟ cneííHajiBHaara3opa3paAHaa TpyóKa corjiacHO DD-WP 134 415, jí nacTOTHo-ΟβΛΘΚΤίίΒΗΗϋ 9JI6M6HT (2) CnOCOÓCTByiOT TOMy, HTO Jia3ep ΙφΗcooTBeTCTByiomeii Kont^Hrypano pe30HaT0pa, b οοοόθΗΗοοτκπρκ oooTBeTGTByjomeM coraacoBaHHH BHyTpeHHero «zmaMeTpa ra~3opa3paHHoS TpyóKH (I) h pajjHyca κρηβη3ηη βηχοληογο 3epKa-jia pe3OHaTopa (3) c ποοτοηηηοζ 0Tpa«aTejjBH0íí cnocoÓHOCTLioBLj paóOTaeT b peoMe ΤΕΜ00. B Μβοτβ ycTaHOBKH οπθιβκιλβηογοHHTep$epoM6Tpa (4) co3,naeTCH TpeóyeMoe imocKoe MOHoxpoMa-ΤΗΗβΟΚΟΘ ΒΟΛΗΟΒΟΘ ΗΟΛΘ. ΌπβηΗβΛΒΗΗΖ ΗΗΤθρφθρΟΜθΤρ OÓpa3O-BaH npeuMymecTBeHHo MOflyjiHTopoM coraacHO DD-WP234 208.MoKyjianaa μοιπηλοτη Jia3epnoro H3JiyHeHHH ocymecTBJíHeTCH bh-lueonucaHHHM cnocoóOM nocpeacTBOM H3MeHe.HHfl OTpaacaTejiLHogonocoÓHOCTW R2 9T0r° MOflyjWTopa c homoiulio θλθκτρηηθοκηχynpaBJífwmHX oarHaJiOB, reHepupyeMux ójiokom πμτηηκη (5).
KaK yace onucaHO Btnne, H3 Jia3epa bhxoaht jw Jiyna: othoch-τθλβηο chjibhhjí Jia3epHHH Jiyq (8) η οτηοοητθλβηο cjiaóuňjiyn (9). Oóa Jiyna MoryT óhtb ηοπολβ3Οββηη b paóoneM npo-necce. B npejxcTaBJíeHHOM Ha Φηγ. I npHMepe oópaóoTKa MaTe-pnajia npon3BO,n;HTCfí paóoHHM JiynoM (8), κοτορυίί $0KycHpyeTcaHa H3flejiHe (12) c πομοιπβιο juíH3h (10). PlsjíyneHne (II), 3βθη-TyaJiBHO OTpajKeHHoe odparao b Jia3ep, KaK ysce onitcaHo βηιιιθ,ne 0Ka3HBaeT bjihhhhh Ha paóoTy ycTpoíicTBa,
Iloflana 3HeprnK ajlh rasoBoro pa3pana ocymecTBJífleTCH ycTpoiíCT bom nHTaHMH (6) ra3opa3paHHOíí TpyóKH, oóecneHHBaiouiMM noAaqy ΙΟ HMiiyjiBCHOíí SHepro HaKaHKH, HeoáxoflHMaa jyia θτογο chhxpo-HH3aiíHa Me»my HMnyjiLcaMii HaKa^iKH h ynpaBJWjoímtMM HMnyjitGa-MH, reHepupyeMHMil yCTpOÍÍCTBOM HHTaHiíH (5) &amp;7IH CneiíííaJIhHO-ΓΟ ΗΗΤθρφθρΟΜβΤρΒ (4), OCyinQOTBJIHeTCfl C ΠΟΜΟΠΙΒ10 3JI6KTpOH~noro ÓJioKa (7).
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II <$opwiyjia Η300ρθΤθΗΗΗ
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Claims (1)

  1. *» PÍÍED Μ ĚT_VY NALEZU Způsob řízení vnitřní zpětné vazby a přivádění vnějšízpětné vazby výkonného COg-laseru, skládajícího se z první-ho výstupního zrcadla rezonátoru s konstantní odrážecíschopností R-j_, druhého výstupního zrcadla rezonátoru s pro-měnnou odrážecí schopností Rg, Prekvenčně-selekčního prvkua výbojky s úzkou úhlovou selektivitou, se vyznaču-je t í m, že frekvenčně-selektivní prvek se nastavujena libovolnou, ale konstantní vlnovou délku laserového zářenia tím pracovní cyklus laseru probíhá tak, že nejprve proměn-né odrážecí schopnost R^ se nastavuje co nejmenší, předevšímse snižuje na nulu, při čemž konstantní odrážecí schopnostR^ se volí pokud možno malá, ale takové hodnoty, aby přihodnotách R2 větších o 0,5 laser překračoval práh vlastníhobuzení a přecházel do stavu plné provozuschopnosti, potomproměnná odrážecí odražažecí schopnost R^ vzrůstá skokemna hodnotu větší než 0,5 tak, že na obou výstupech rezoná-toru se generuje laserové záření, po čemž R2 opět klesá aždo nuly.
CS869289A 1986-01-09 1986-12-15 Zarizeni pro selektivni modulaci intenzity a ziskavani impulsu zareni urcite delky vln vysokovykonnych co laseru CS928986A1 (en)

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EP0229285A2 (de) 1987-07-22
JPS62222689A (ja) 1987-09-30
EP0229285B1 (de) 1996-08-21
US4858240A (en) 1989-08-15
ATE141720T1 (de) 1996-09-15
IN167151B (cs) 1990-09-08
DE3650558D1 (de) 1996-09-26
EP0229285A3 (en) 1989-04-12
DD256439A3 (de) 1988-05-11

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