[PDF]    http://dx.doi.org/10.3952/lithjphys.47418

Open access article / Atviros prieigos straipsnis

Lith. J. Phys. 47, 421–428 (2007)


AMPLIFIED LUMINESCENCE AND GENERATION DYNAMICS OF THE DIODE PUMPED ERBIUM–YTTERBIUM LASER
M.V. Bogdanovicha, G.I. Ryabtseva, A.I. Yenzhyieuskia, L.I. Burovb, A.G. Ryabtsevb, M.A. Shchemelevb, and A.S. Smalc
aB.I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Nezalezhnasti Ave 68, 220072 Minsk, Belarus
E-mail: ryabtsev@dragon.bas-net.by
bBelarusian State University, Nezalezhnasti Ave 4, 220050 Minsk, Belarus
cBrest State Technical University, Moskovskaya 267, 224017 Brest, Belarus

Received 13 June 2007; revised 28 September 2007; accepted 21 November 2007

The influence of the cavity trapped amplified luminescence (CTAL) on the threshold, power and dynamic characteristics of Er, Yb: glass lasers with end and side diode pump configurations has been studied. The CTAL loss coefficient has been evaluated using the luminescence balance equation. The inverse proportion dependence of the CTAL loss coefficient on the cavity length has been revealed. It has been shown that amplification of luminescence in the laser cavity leads to a significant increase of the threshold pump power (~3–5 times). The Er, Yb: glass laser generation dynamics has been modelled taking into account the luminescence evolution beginning with the onset of the diode pumping pulse. Depending on the diode pumping pulse amplitude, the increase or decrease of the Er, Yb: glass laser pulse generation delay can be observed.
Keywords: amplified luminescence, Er, Yb: glass laser, diode pumping
PACS: 42.55.Xi, 42.60.Mi


DIODAIS KAUPINAMO ERBIO IR ITERBIO LAZERIO SUSTIPRINTA LIUMINESCENCIJA IR GENERAVIMO DINAMIKA
M.V. Bogdanovicha, G.I. Ryabtseva, A.I. Yenzhyieuskia, L.I. Burovb, A.G. Ryabtsevb, M.A. Shchemelevb, A.S. Smalc
aB.I. Stepanovo Fizikos institutas, Minskas, Baltarusija
bBaltarusijos valstybinis universitetas, Minskas, Baltarusija
cBresto valstybinis technikos universitetas, Brestas, Baltarusija

Išanalizuota rezonatoriuje pagautos sustiprintos liuminescencijos (RPSL) įtaka išilgai ir iš šonų diodais kaupinamų Er, Yb: stiklo lazerių generavimo slenksčiui, galiai ir dinaminėms charakteristikoms. Panaudojant liuminescencijos balanso lygtis, buvo įvertintas RPSL nuostolių koeficientas. Nustatyta, kad RPSL nuostolių koeficientas atvirkščiai proporcingas rezonatoriaus ilgiui. Parodyta, kad luminescencijos stiprinimas rezonatoriuje žymiai padidina kaupinimo galios slenkstį (~3–5 kartus). Buvo sumodeliuota Er, Yb: stiklo lazerio generavimo dinamika, įskaitant liuminescencijos vystymąsi nuo diodinio kaupinimo impulso pradžios. Priklausomai nuo diodinio kaupinimo impulso amplitudės, galima pasiekti didesnį ar mažesnį Er, Yb: stiklo lazerio impulso generavimo vėlavimą.


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