71 research outputs found
In-band pumped room-temperature Er:KY(WO4)2 laser emitting around 1:6 mm
We present efficient continuous-wave operation of an Er:KY(WO 4)2 crystal under in-band pumping by a compact diode-pumped Er, Yb:GdAl3(BO3)4 laser. Maximum slope efficiency of 27% and output power of 35 mW at 1609.5 nm were obtained with beam propagation factor M2 < 1:2. Absorption and stimulated emission cross-section spectra, as well as the radiative lifetime of the 4I13=2 energy level, were determined
Spectroscopy and laser performance of in-band pumped Er:LLF and Er:YLF crystals
Β© 2016 IEEE.Spectroscopic properties and continuous-wave laser performance of in-band pumped Er:LiLuF4 and Er:LiYF4 crystals were investigated. For Er:LiLuF4 crystal maximum slope efficiency of 44 % was obtained at 1609 nm wavelength. Er:LiYF4 crystal laser operation was demonstrated for the first time under in-band pumping. Output power of 58 mW and slope efficiency of 21 % at 1606 nm were achieved
Er:KY(WO42 and Er:LiYF4 crystals for eye-safe in-band pumped lasers
Β© OSA 2015. Laser operation of in-band pumped Er:KY(WO4)2 and, for the first time to our knowledge, Er:LiYF4 crystals was demonstrated. The maximal slope efficiencies of 40% and 21% were obtained for Er:KY(WO4)2 and Er:LiYF4 crystals, respectively
Micro-crystallization and spectroscopic properties of Er, Yb:RAl-borates (R=Y, Gd) obtained in RAl<inf>3</inf>(BO<inf>3</inf>)<inf>4</inf>βK<inf>2</inf>Mo<inf>3</inf>O<inf>10</inf>βB<inf>2</inf>O<inf>3</inf>βR<inf>2</inf>O<inf>3</inf> and RAl<inf>3</inf>(BO<inf>3</inf>)<inf>4</inf>βB<inf>2</inf>O<inf>3</inf> systems
Β© 2016 Elsevier B.V.The spontaneous YAl3(BO3)4 (YAB) and GdAl3(BO3)4 (GdAB) crystals (of nominal composition and co-doped with Er and Yb) up to 4β5Β mm in length were grown from high-temperature solutions using K2Mo3O10 based fluxes in the temperature range of 1120β900Β Β°C. Glassβceramic composites based on the YAB and GdAB micro-crystals have been prepared by quenching YABβB2O3 and GdABβB2O3 melts and characterized by X-ray diffraction and spectroscopic methods. The vitrified melt was shown to contain micro- and nano-crystalline rare-earth borate phases. Their distribution over the composites has been investigated by electron microscopy and three-dimensional X-ray tomography. The absorption spectra of these materials co-doped with erbium and ytterbium as well as luminescence spectrum were demonstrated
Micro-crystallization and spectroscopic properties of Er, Yb:RAl-borates (R=Y, Gd) obtained in RAl<inf>3</inf>(BO<inf>3</inf>)<inf>4</inf>-K<inf>2</inf>Mo<inf>3</inf>O<inf>10</inf>-B<inf>2</inf>O<inf>3</inf>-R<inf>2</inf>O<inf>3</inf> and RAl<inf>3</inf>(BO<inf>3</inf>)<inf>4</inf>-B<inf>2</inf>O<inf>3</inf> s
Β© 2016 Elsevier B.V.The spontaneous YAl3(BO3)4 (YAB) and GdAl3(BO3)4 (GdAB) crystals (of nominal composition and co-doped with Er and Yb) up to 4-5mm in length were grown from high-temperature solutions using K2Mo3O10 based fluxes in the temperature range of 1120-900Β°C. Glass-ceramic composites based on the YAB and GdAB micro-crystals have been prepared by quenching YAB-B2O3 and GdAB-B2O3 melts and characterized by X-ray diffraction and spectroscopic methods. The vitrified melt was shown to contain micro- and nano-crystalline rare-earth borate phases. Their distribution over the composites has been investigated by electron microscopy and three-dimensional X-ray tomography. The absorption spectra of these materials co-doped with erbium and ytterbium as well as luminescence spectrum were demonstrated
Highly efficient continuous-wave diode-pumped Er, Yb:GdAl3(BO3)4 laser
We report the highly efficient continuous-wave diode-pumped laser operation of Er, Yb:GdAl3 BO3 4 crystal. Absorption and stimulated emission spectra, emission lifetimes, and efficiencies of energy transfer from Yb3 to Er3 ions were determined. A maximal output power of 780 mWwas obtained at 1531 nm at absorbed pump power of 4 W with slope efficiency of 26%
Laser Performance of Er,Yb:YAl3(BO3)4 Crystals with Different Erbium Concentrations
The effect of erbium concentration on the laser performance of Er,Yb:YAl3(BO3)4 crystals was investigated. A maximal output power of 1.6 W in CW and 2.7 W in QCW regimes was obtained at 1522 nm
ΠΡΠΈΡΡΠ°Π»Π»Ρ Er,Yb:Ca3RE2(BO3)4 (RE=Y, Gd) β Π½ΠΎΠ²ΡΠ΅ ΡΡΠ΅Π΄Ρ Π΄Π»Ρ Π»Π°Π·Π΅ΡΠΎΠ², ΠΈΠ·Π»ΡΡΠ°ΡΡΠΈΡ Π² ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ 1,5 ΠΌΠΊΠΌ
The search for new crystalline host materials for the usage in lasers emitting in the eye-safe spectral range of 1.5β1.6 Β΅m is an important task. The aim of this work was to study the growth technique, spectroscopic properties and laser characteristics of new active media β crystals Er3+,Yb3+:Ca2RE2(BO3)4 (RE=Y, Gd).Calcium-yttrium Er3+,Yb3+:Ca3Y2 (BO3)4 (CYB) and calcium-gadolinium Er3+,Yb3+: Ca2 Gd 2(BO3)4 Β (CGB) oxoborate crystals co-doped with erbium and ytterbium ions were investigated. Polarized absorption and emission cross-section spectra were determined. The lifetimes of 4I11/2 and 4I13/2 energy levels of Er3+ ions were measured and ytterbium-erbium energy transfer efficiencies were estimated. The calculation of the gain cross-section spectra was performed. By using of Er3+,Yb3+: Ca2 RE 2(BO3)4Β (RE=Y, Gd) crystals the laser performance was realized, for the first time to the best of our knowledge. The laser characteristics were studied in a quasi-CW (QCW) laser operation.The wide band with a peak at the wavelength of 976 nm is observed in the absorption spectra of both crystals. This peak coincides with the emission wavelength of the pump laser diodes for Yb-doped active media. The maximum value of absorption cross-section was 1.7 Γ 10β20 cm2 for polarization E // b for both crystals. The lifetimes of the upper laser level 4I13/2 of Er3+ ions were 580 Β± 30 ΞΌs and 550 Β± 30 ΞΌs for Er,Yb:CYB and Er,Yb:CGB crystals, respectively. The energy transfer efficiencies from ytterbium to erbium ions for an Er,Yb:CYB and Er,Yb:CGB crystals were 94 % and 96 %, respectively. According to gain spectrum of the Er,Yb:CYB crystal the gain band peak is centered at the wavelength of 1530 nm. The maximum QCW output power was 0.5 W with slope efficiency of 13 % regarding to absorbed pump power for an Er,Yb: CYB crystal. The laser beam parameter M2 did not exceed < 1.5.Based on the obtained results, it can be concluded that these crystals are promising active media for lasers emitting in the spectral range of 1.5β1.6 ΞΌm for the usage in laser rangefinder and laser-induced breakdown spectroscopy systems, and LIDARs.ΠΠΎΠΈΡΠΊ Π½ΠΎΠ²ΡΡ
ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΌΠ°ΡΡΠΈΡ Π΄Π»Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² Π»Π°Π·Π΅ΡΠ°Ρ
, ΠΈΠ·Π»ΡΡΠ°ΡΡΠΈΡ
Π² ΡΡΠ»ΠΎΠ²Π½ΠΎ Π±Π΅Π·ΠΎΠΏΠ°ΡΠ½ΠΎΠΌ Π΄Π»Ρ Π³Π»Π°Π· ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ 1,5β1,6 ΠΌΠΊΠΌ, ΡΠ²Π»ΡΠ΅ΡΡΡ Π°ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΉ Π·Π°Π΄Π°ΡΠ΅ΠΉ. Π¦Π΅Π»ΡΡ Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΡ ΡΠ²Π»ΡΠ»ΠΎΡΡ ΠΈΠ·ΡΡΠ΅Π½ΠΈΠ΅ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΡΠΎΡΡΠ°, ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΈ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊ Π½ΠΎΠ²ΡΡ
Π°ΠΊΡΠΈΠ²Π½ΡΡ
ΡΡΠ΅Π΄ β ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² Er3+,Yb3+:Ca2RE2(BO3)4 Β (RE=Y, Gd).Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΠΈΡΡΠ»Π΅Π΄ΡΠ΅ΠΌΡΡ
ΠΎΠ±ΡΠ°Π·ΡΠΎΠ² ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π»ΠΈΡΡ ΠΊΡΠΈΡΡΠ°Π»Π»Ρ ΠΊΠ°Π»ΡΡΠΈΠΉ-ΠΈΡΡΡΠΈΠ΅Π²ΠΎΠ³ΠΎ Er3+,Yb3+:Ca3Y2(BO3)4 (CYB) ΠΈ ΠΊΠ°Π»ΡΡΠΈΠΉ-Π³Π°Π΄ΠΎΠ»ΠΈΠ½ΠΈΠ΅Π²ΠΎΠ³ΠΎ Er3+,Yb3+: Ca2 Gd 2(BO3)4Β (CGB) ΠΎΠΊΡΠΎΠ±ΠΎΡΠ°ΡΠΎΠ², ΡΠΎΠ°ΠΊΡΠΈΠ²ΠΈΡΠΎΠ²Π°Π½Π½ΡΡ
ΠΈΠΎΠ½Π°ΠΌΠΈ ΡΡΠ±ΠΈΡ ΠΈ ΠΈΡΡΠ΅ΡΠ±ΠΈΡ. Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠΏΠ΅ΠΊΡΡΡ ΠΏΠΎΠΏΠ΅ΡΠ΅ΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ ΠΈ ΡΡΠΈΠΌΡΠ»ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΈΡΠΏΡΡΠΊΠ°Π½ΠΈΡ Π² ΠΏΠΎΠ»ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΌ ΡΠ²Π΅ΡΠ΅. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ Π²ΡΠ΅ΠΌΠ΅Π½Π° ΠΆΠΈΠ·Π½ΠΈ ΡΠ½Π΅ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠΎΠ²Π½Π΅ΠΉ 4I11/2 ΠΈ 4I13/2 ΠΈΠΎΠ½Π° ΡΡΠ±ΠΈΡ, Π° ΡΠ°ΠΊΠΆΠ΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΎΡΠ΅Π½ΠΊΠ° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° ΡΠ½Π΅ΡΠ³ΠΈΠΈ ΠΎΡ ΠΈΠΎΠ½ΠΎΠ² ΠΈΡΡΠ΅Π±ΡΠΈΡ ΠΊ ΠΈΠΎΠ½Π°ΠΌ ΡΡΠ±ΠΈΡ. ΠΡΠΏΠΎΠ»Π½Π΅Π½ ΡΠ°ΡΡΠ΅Ρ ΡΠΏΠ΅ΠΊΡΡΠΎΠ² ΠΏΠΎΠΏΠ΅ΡΠ΅ΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΡΡΠΈΠ»Π΅Π½ΠΈΡ. ΠΠΏΠ΅ΡΠ²ΡΠ΅ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² ΡΠ΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π° Π»Π°Π·Π΅ΡΠ½Π°Ρ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΡ, ΠΈΠ·ΡΡΠ΅Π½Ρ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ Π² ΠΊΠ²Π°Π·ΠΈΠ½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ.Π ΡΠΏΠ΅ΠΊΡΡΠ°Ρ
ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΠΎΠ±ΠΎΠΈΡ
ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² Π½Π°Π±Π»ΡΠ΄Π°Π΅ΡΡΡ ΠΏΠΎΠ»ΠΎΡΠ° Ρ ΠΏΠΈΠΊΠΎΠΌ Π½Π° Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ 976 Π½ΠΌ, ΡΡΠΎ ΡΠΎΠ³Π»Π°ΡΡΠ΅ΡΡΡ Ρ Π΄Π»ΠΈΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ ΠΈΡΠΏΡΡΠΊΠ°Π½ΠΈΡ Π»Π°Π·Π΅ΡΠ½ΡΡ
Π΄ΠΈΠΎΠ΄ΠΎΠ², ΠΏΡΠΈΠΌΠ΅Π½ΡΠ΅ΠΌΡΡ
Π΄Π»Ρ Π½Π°ΠΊΠ°ΡΠΊΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΡ
ΡΠ»Π΅ΠΌΠ΅Π½ΡΠΎΠ² Ρ ΠΈΠΎΠ½Π°ΠΌΠΈ Yb3+ . ΠΠ°ΠΈΠ±ΠΎΠ»ΡΡΠ΅Π΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ΠΏΠΎΠΏΠ΅ΡΠ΅ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΡΠ΅Π½ΠΈΡ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ Π΄Π»Ρ ΠΎΠ±ΠΎΠΈΡ
ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΎ 1,7Γ10β20 ΡΠΌ2 Π΄Π»Ρ ΠΏΠΎΠ»ΡΡΠΈΠ·Π°ΡΠΈΠΈ E // b Π½Π° Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ 976 Π½ΠΌ. ΠΡΠ΅ΠΌΡ ΠΆΠΈΠ·Π½ΠΈ Π²Π΅ΡΡ
Π½Π΅Π³ΠΎ Π»Π°Π·Π΅ΡΠ½ΠΎΠ³ΠΎ ΡΡΠΎΠ²Π½Ρ 4I13/2 ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΎ 580 Β± 30 ΠΌΠΊΡ ΠΈ 550 Β± 30 ΠΌΠΊΡ Π΄Π»Ρ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² Er,Yb:CYB ΠΈ Er,Yb:CGB ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²Π΅Π½Π½ΠΎ. ΠΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° ΡΠ½Π΅ΡΠ³ΠΈΠΈ ΠΎΡ ΠΈΠΎΠ½ΠΎΠ² ΠΈΡΡΠ΅ΡΠ±ΠΈΡ ΠΊ ΠΈΠΎΠ½Π°ΠΌ ΡΡΠ±ΠΈΡ ΡΠΎΡΡΠ°Π²ΠΈΠ»Π° 94 % Π΄Π»Ρ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Er,Yb:CYB ΠΈ 96 % Π΄Π»Ρ Er,Yb:CGB. Π Π°ΡΡΠ΅Ρ ΡΠΏΠ΅ΠΊΡΡΠ° ΡΡΠΈΠ»Π΅Π½ΠΈΡ Π΄Π»Ρ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Er,Yb:CYB, ΠΏΠΎΠΊΠ°Π·Π°Π» ΡΡΠΎ ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌ ΠΏΠΎΠ»ΠΎΡΡ ΡΡΠΈΠ»Π΅Π½ΠΈΡ Π½Π°Ρ
ΠΎΠ΄ΠΈΡΡΡ Π½Π° Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ 1530 Π½ΠΌ. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ Π²ΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΌΠΎΡΠ½ΠΎΡΡΠΈ Π² ΠΊΠ²Π°Π·ΠΈΠ½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ ΡΠΎΡΡΠ°Π²ΠΈΠ»ΠΎ 0,5 ΠΡ ΠΏΡΠΈ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠΎ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½Π½ΠΎΠΉ ΠΌΠΎΡΠ½ΠΎΡΡΠΈ Π½Π°ΠΊΠ°ΡΠΊΠΈ 13 % Π΄Π»Ρ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Er,Yb:CYB, ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡ ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½ΠΈΡ Π»Π°Π·Π΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΡΠΊΠ° Π2 Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π» 1,5.ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ², ΠΌΠΎΠΆΠ½ΠΎ ΡΠ΄Π΅Π»Π°ΡΡ Π²ΡΠ²ΠΎΠ΄, ΡΡΠΎ Π΄Π°Π½Π½ΡΠ΅ ΠΊΡΠΈΡΡΠ°Π»Π»Ρ ΡΠ²Π»ΡΡΡΡΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΡΡΠ΅Π΄Π°ΠΌΠΈ Π΄Π»Ρ Π»Π°Π·Π΅ΡΠΎΠ², ΠΈΠ·Π»ΡΡΠ°ΡΡΠΈΡ
Π² ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ 1,5β1,6 ΠΌΠΊΠΌ, Π΄Π»Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΠΎΡΡΠ°Π²Π΅ ΡΠΈΡΡΠ΅ΠΌ Π»Π°Π·Π΅ΡΠ½ΠΎΠΉ Π΄Π°Π»ΡΠ½ΠΎΠΌΠ΅ΡΡΠΈΠΈ, Π»Π°Π·Π΅ΡΠ½ΠΎ-ΠΈΡΠΊΡΠΎΠ²ΠΎΠΉ ΡΠΌΠΈΡΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠΈ ΠΈ Π»ΠΈΠ΄Π°ΡΠΎΠ²
ΠΡΠ±ΠΈΠ΅Π²ΡΠΉ Π»Π°Π·Π΅Ρ, ΠΈΠ·Π»ΡΡΠ°ΡΡΠΈΠΉ Π² ΠΎΠ±Π»Π°ΡΡΠΈ 1.5 ΠΌΠΊΠΌ, Ρ Π²ΡΡΠΎΠΊΠΎΠΉ Π²ΡΡ ΠΎΠ΄Π½ΠΎΠΉ ΠΌΠΎΡΠ½ΠΎΡΡΡΡ
Solid-state lasers emitting in the 1.5β1.6 ΞΌm spectral range are very promising for eye-safe laser range finding, ophthalmology, fiber-optic communication systems, and optical location. The aim of this work is the investigation of spectrosposcopic and laser properties of gain medium based on borate crystal for abovementioned lasers.Spectroscopic and laser properties of Er,Yb:YAl3(BO3)4 crystals with different concentrations of dopants were investigated. Polarized absorption and emission cross-section spectra were determined. The ytterbium- erbium energy transfer efficiency was estimated. The maximal energy transfer efficiency up to 97 % was obtained for Er(4 at.%),Yb(11 at.%):YAl3(BO3)4 crystal.The laser operation of heavily doped crystals with erbium concentration up to 4 Π°t.% (2.2^1020 cm^3) was realized. By using of Er(2 at.%),Yb(11 at.%):YAl3(BO3)4 crystal a maximal continuous- wave (CW) output power of 1.6 W was obtained at 1522 nm with slope efficiency of 32 %. By using of Er(4 at.%),Yb(11 at.%):YAl3(BO3)4 crystal a maximal peak output power up to 2.2 W with slope efficiency of 40 % was realized in quasi-continuous-wave regime of operation. The spatial profile of the output beam was close to TEM00 mode with M2 < 1.2 during all laser experiments.Based on the obtained results, it can be concluded that Er,Yb:YAl3(BO3)4 crystals are promising active media for lasers emitting in the spectral range of 1.5-1.6 pm for the usage in laser rangefinder and laser- induced breakdown spectroscopy systems, and LIDARs.Π’Π²Π΅ΡΠ΄ΠΎΡΠ΅Π»ΡΠ½ΡΠ΅ Π»Π°Π·Π΅ΡΡ, ΠΈΠ·Π»ΡΡΠ°ΡΡΠΈΠ΅ Π² ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ 1.5β1.6 ΠΌΠΊΠΌ, Π½Π°Ρ
ΠΎΠ΄ΡΡ ΡΠΈΡΠΎΠΊΠΎΠ΅ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ Π² Π΄Π°Π»ΡΠ½ΠΎΠΌΠ΅ΡΡΠΈΠΈ, ΠΎΡΡΠ°Π»ΡΠΌΠΎΡΠΎΠ»ΠΎΠ³ΠΈΠΈ, Π²ΠΎΠ»ΠΎΠΊΠΎΠ½Π½ΠΎ-ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠΈΡΡΠ΅ΠΌΠ°Ρ
ΠΈ ΠΎΠΏΡΠΈΡΠ΅ΡΠΊΠΎΠΉ Π»ΠΎΠΊΠ°ΡΠΈΠΈ. Π¦Π΅Π»ΡΡ Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΡ ΡΠ²Π»ΡΠ»ΠΎΡΡ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ²ΠΎΠΉΡΡΠ² Π°ΠΊΡΠΈΠ²Π½ΠΎΠΉ ΡΡΠ΅Π΄Ρ Π½Π° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Π±ΠΎΡΠ°ΡΠ° Π΄Π»Ρ ΡΠΊΠ°Π·Π°Π½Π½ΡΡ
Π»Π°Π·Π΅ΡΠΎΠ².ΠΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠ΅ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΎΠ½Π½ΡΡ
ΡΠ²ΠΎΠΉΡΡΠ² ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ² Er,Yb:YAl3(BO3)4 Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌ ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌ ΠΈΠΎΠ½ΠΎΠ²-Π°ΠΊΡΠΈΠ²Π°ΡΠΎΡΠΎΠ². Π ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠ΅ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠΏΠ΅ΠΊΡΡΡ ΠΏΠΎΠΏΠ΅ΡΠ΅ΡΠ½ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ ΠΈ ΡΡΠΈΠΌΡΠ»ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΈΡΠΏΡΡΠΊΠ°Π½ΠΈΡ Π² ΠΏΠΎΠ»ΡΡΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΌ ΡΠ²Π΅ΡΠ΅. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΎΡΠ΅Π½ΠΊΠ° ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° ΡΠ½Π΅ΡΠ³ΠΈΠΈ ΠΎΡ ΠΈΠΎΠ½ΠΎΠ² ΠΈΡΡΠ΅Π±ΠΈΡ Π½Π° ΠΈΠΎΠ½Ρ ΡΡΠ±ΠΈΡ. ΠΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠ΅ΡΠ΅Π½ΠΎΡΠ° ΡΠ½Π΅ΡΠ³ΠΈΠΈ Π΄ΠΎΡΡΠΈΠ³Π°Π»Π° 97 % Π΄Π»Ρ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Er(4 at.%),Yb(11 at.%):YAl3(BO3)4.Π Π΅Π°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π°Β Β Π»Π°Π·Π΅ΡΠ½Π°ΡΒ Β Π³Π΅Π½Π΅ΡΠ°ΡΠΈΡΒ Β Π΄Π»ΡΒ Β ΠΊΡΠΈΡΡΠ°Π»Π»ΠΎΠ²Β Β ΡΒ Β Π²ΡΡΠΎΠΊΠΈΠΌΒ Β ΡΠΎΠ΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ΠΌΒ Β ΠΈΠΎΠ½ΠΎΠ²Β Β ΡΡΠ±ΠΈΡΒ Π΄ΠΎ 4 Π°Ρ.% (2.2β1020 cΠΌβ3). ΠΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Er(2 at.%),Yb(11 at.%):YAl3 (BO3)4Β ΠΏΠΎΠ»ΡΡΠ΅Π½ Π½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΡΠΉ ΡΠ΅ΠΆΠΈΠΌ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ Ρ ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΠΉ Π²ΡΡ
ΠΎΠ΄Π½ΠΎΠΉ ΠΌΠΎΡΠ½ΠΎΡΡΡΡ Π΄ΠΎ 1,6 ΠΡ Π½Π° Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ 1522 Π½ΠΌΒ ΠΏΡΠΈ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ 32 %. Π ΠΊΠ²Π°Π·ΠΈΠ½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΠΎΠΌ ΡΠ΅ΠΆΠΈΠΌΠ΅ Π³Π΅Π½Π΅ΡΠ°ΡΠΈΠΈ Π΄Π»Ρ ΠΊΡΠΈΡΡΠ°Π»Π»Π° Er(4 at.%),Yb(11 at.%):YAl3(BO3)4 ΠΌΠ°ΠΊΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ ΠΏΠΈΠΊΠΎΠ²Π°Ρ ΠΌΠΎΡΠ½ΠΎΡΡΡ Π΄ΠΎΡΡΠΈΠ³Π°Π»Π° 2,2 ΠΡ ΠΏΡΠΈ Π΄ΠΈΡΡΠ΅ΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΠΎΠΉ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΠΎ ΠΏΠΎΠ³Π»ΠΎΡΡΠ½Π½ΠΎΠΉ ΠΌΠΎΡΠ½ΠΎΡΡΠΈ Π½Π°ΠΊΠ°ΡΠΊΠΈ 40 %. ΠΡΠΎΡΠΈΠ»Ρ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΈΠ½ΡΠ΅Π½ΡΠΈΠ²Π½ΠΎΡΡΠΈ Π² ΠΏΠΎΠΏΠ΅ΡΠ΅ΡΠ½ΠΎΠΌ ΡΠ΅ΡΠ΅Π½ΠΈΠΈ Π»Π°Π·Π΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΡΠΊΠ° Ρ
ΠΎΡΠΎΡΠΎ Π°ΠΏΠΏΡΠΎΠΊΡΠΈΠΌΠΈΡΠΎΠ²Π°Π»ΡΡ ΡΡΠ½ΠΊΡΠΈΠ΅ΠΉ ΠΠ°ΡΡΡΠ° ΡΠ°ΡΡΡΠΈΡΠ°Π½Π½ΠΎΠ΅ Π·Π½Π°ΡΠ΅Π½ΠΈΠ΅ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ° ΡΠ°ΡΠΏΡΠΎΡΡΡΠ°Π½Π΅Π½ΠΈΡ Π»Π°Π·Π΅ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΡΠΊΠ° Π2 Π½Π΅ ΠΏΡΠ΅Π²ΡΡΠ°Π»ΠΎ 1,2, ΡΡΠΎ ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΡΠ΅Ρ Π’ΠΠ00 ΠΌΠΎΠ΄Π΅ ΡΠ΅Π·ΠΎΠ½Π°ΡΠΎΡΠ°.ΠΠ° ΠΎΡΠ½ΠΎΠ²Π΅ ΠΏΠΎΠ»ΡΡΠ΅Π½Π½ΡΡ
ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΎΠ², ΠΌΠΎΠΆΠ½ΠΎ ΡΠ΄Π΅Π»Π°ΡΡ Π²ΡΠ²ΠΎΠ΄, ΡΡΠΎ Π΄Π°Π½Π½ΡΠ΅ ΠΊΡΠΈΡΡΠ°Π»Π»Ρ ΡΠ²Π»ΡΡΡΡΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ Π°ΠΊΡΠΈΠ²Π½ΡΠΌΠΈ ΡΡΠ΅Π΄Π°ΠΌΠΈ, Π΄Π»Ρ Π»Π°Π·Π΅ΡΠΎΠ², ΠΈΠ·Π»ΡΡΠ°ΡΡΠΈΡ
Π² ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΎΠΌ Π΄ΠΈΠ°ΠΏΠ°Π·ΠΎΠ½Π΅ 1.5β1.6 ΠΌΠΊΠΌ, Π΄Π»Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΠΎΡΡΠ°Π²Π΅ ΡΠΈΡΡΠ΅ΠΌ Π»Π°Π·Π΅ΡΠ½ΠΎΠΉ Π΄Π°Π»ΡΠ½ΠΎΠΌΠ΅ΡΡΠΈΠΈ, Π»Π°Π·Π΅ΡΠ½ΠΎ-ΠΈΡΠΊΡΠΎΠ²ΠΎΠΉ ΡΠΌΠΈΡΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΠΌΠ΅ΡΡΠΈΠΈ ΠΈ Π»ΠΈΠ΄Π°ΡΠΎΠ²
- β¦