Vol. 32, issue 02, article # 12

Abstract:

The lasing characteristics of atomic He + Eu and Ne + Eu vapor lasers at the y⁸P_9/2 → 8⁷D transition with a wavelength of 1.76 mm were compared. It is shown that the output power and pulsed energy of the He + Eu laser, depending on the pump power and pulse repetition frequency, are slightly worse than those of the Ne + Eu laser. An empirical model is proposed to explain the behavior of the He + Eu laser output power as a function of the input power. It was established that the lifetime of the He + Eu laser does not exceed two hours, while the Ne + Eu laser by the end of the experiment operated about 200 hours. It has been suggested that the relaxation of metastable levels of the ion and atom of europium and degradation of active media consisting of a mixture of europium and helium vapors is responsible for the same process involving helium.

Keywords:

europium vapor laser, ion Eu-laser, atom Eu-laser, buffer gas, degradation of the active medium

References:

1.  Batenin V.M., Bohan P.A., Buchanov V.V., Evtushenko G.S., Kazaryan M.A., Karpuhin V.T., Klimovskij I.I., Malikov M.M. Lazery na samoogranichennyh perekhodah atomov metallov – 2. M.: Fizmatlit, 2011. 616 p.
2.  Little C.E. Metal Vapor Lasers. Physics, Engineering & Applications. Chichester, UK: John Willey & Sons, 1998. 620 p.
3.  Evtushenko G.S., Shiyanov D.V., Gubarev F.A. Lazery na parah metallov s vysokimi chastotami sledovaniya impul'sov. Tomsk: Izd-vo Tom. politekhn. un-ta, 2010. 276 p.
4.  Soldatov A.N., Solomonov V.I. Gazorazryadnye lazery na samoogranichennyh perekhodah v parah metallov. Novosibirsk: Nauka, 1985. 152 p.
5.  Soldatov A.N., Filonov A.G., Polunin Yu.P., Vasil'eva A.V. Lazernaya sistema «generator–usilitel'» na parah strontsiya so srednej moshchnost'yu bolee 20 Vt // Optika atmosf. i okeana. 2008. V. 21, N 8. P. 666‒668.
6.  Cahuzac Ph. Rare laser infrarouges dans les vapeurs de terres rares et d’alcalino-terreux // J. De Fhysique. 1971. V. 32, N 7. P. 499‒505.
7.  Bohan P.A., Klimkin V.M., Prokop'ev V.E., Solomonov V.I. Issledovanie lazera na samoogranichivayushchihsya perekhodah atoma i iona evropiya // Kvant. elektron. 1977. V. 4, N 1. P. 152‒154.
8.  Troitskij V.O., Sokovikov V.G., Filonov A.G., Shiyanov D.V. Lazer na parah evropiya // Optika atmosf. i okeana. 2017. V. 30, N 3. P. 253–258; Troitskii V.О., Sоkоvikov V.G., Filonov А.G., Shiyanov D.V. Europium vapor laser // Atmos. Ocean. Opt. 2017. V. 30, N 5. P. 489–494.
9.  Bohan P.A., Klimkin V.M., Prokop'ev V.E. Gazovyj lazer na ionizirovannom evropii // Pis'ma v ZhETF. 1973. V. 18, iss. 2. P. 80‒82.
10.      Bohan P.A., Klimkin V.M., Prokop'ev V.E. Stolknovitel'nyj gazorazryadnyj lazer na ionizirovannyh parah evropiya // Kvant. elektron. 1974. V. 1, N 6. P. 1365‒1369.
11.      Bohan P.A., Klimkin V.M., Prokop'ev V.E., Monastyrev S.S. Ionnyj gelij-evropievyj lazer so srednej moshchnost'yu 2 Wt // Pis'ma v ZhETF. 1977. V. 3, iss. 9. P. 410‒413.
12.      Bohan P.A. Nepreryvnaya generatsiya v stolknovitel'nom gelij-evropievom lazere // Pis'ma v ZhETF. 1984. V. 10, iss. 4. P. 210‒214.
13.      Bokhan P.A., Zakrevsky D.E. High power high repetition rate pulsed collisional laser using a He + Eu⁺ mixture // Opt. Quant. Electron. 1991. V. 23. P. S513‒S522.
14.      Bokhan P.A., Zakrevsky D.E. Investigation of a He–Eu⁺ laser excited by short pumping pulses // J. Russ. Laser Res. 1995. V. 16, N 2. P. 138‒144.
15.      Klimkin V.M. Povtornaya kontraktsiya energonapryazhennyh impul'sno-periodicheskih razryadov // Pis'ma v ZhETF. 2003. V. 29, iss. 18. P. 16‒21.
16.      Spravochnik po lazeram / pod red. A.M. Prohorova. M.: Sov. radio, 1978. V. 1. 504 p.
17.      Klimkin V.M., Monastyrev S.S., Prokop'ev V.E. Selektivnaya relaksatsiya dolgozhivushchih sostoyanij atomov metallov v gazorazryadnoj plazme. Statsionarnaya generatsiya na perekhodah ¹Р – ¹D₂ kal'tsiya i strontsiya // Pis'ma v ZhETF. 1974. V. 20, iss. 4. P. 251–253.
18.      Klimkin V.M., Prokopyev V.E. Metal vapor lasers with chemical depopulation of the metastable // Proc. SPIE. 1998. V. 3403. Р. 155–160.