Laser Action and Spectroscopic Properties of Er3+ in YAlO3

1971 ◽  
Vol 42 (1) ◽  
pp. 301-305 ◽  
Author(s):  
M. J. Weber ◽  
M. Bass ◽  
G. A. deMars
Keyword(s):  
Laser Action ◽  
Spectroscopic Properties

An in depth characterization of the spectroscopic properties and laser action of 10 at% Yb doped Y3ScxAl5-xO12 (x = 0.25, 0.5, 1.0, 1.5) transparent ceramics

2020 ◽  
Vol 46 (11) ◽  
pp. 17252-17260 ◽  
Author(s):  
Guido Toci ◽  
Angela Pirri ◽  
Barbara Patrizi ◽  
Yagang Feng ◽  
Tengfei Xie ◽  
...  
Keyword(s):  
Laser Action ◽  
Spectroscopic Properties ◽  
Transparent Ceramics

VUV SPECTROSCOPY OF CRYSTALLINE EMITTERS BASED ON 5d–4f TRANSITIONS IN RARE EARTH IONS

2002 ◽  
Vol 09 (01) ◽  
pp. 621-626 ◽  
Author(s):  
V. N. MAKHOV ◽  
N. YU. KIRIKOVA ◽  
N. M. KHAIDUKOV ◽  
M. KIRM ◽  
E. NEGODIN ◽  
...  
Keyword(s):  
Stokes Shift ◽  
Laser Action ◽  
Spectroscopic Properties ◽  
Rare Earth Ions ◽  
Stimulated Emission ◽  
Solid State Lasers ◽  
Nonradiative Relaxation ◽  
Level Laser ◽  
Vuv Spectroscopy ◽  
Strong Spin

The spectroscopic properties of several fluoride crystals ( LiYF 4, KYF 4, K 2 YF 5, KLiYF 5, CsY 2 F 7, SrF 2) doped with Nd 3+, Er 3+ or Tm 3+ are analyzed from the viewpoint of their possible applications as active media for VUV solid state lasers. It has been found that in many crystals there exists very efficient nonradiative relaxation from higher-lying 5d states to the lowest 5d level responsible for the spin-forbidden luminescence. In fact, the energy level diagram of 5d–4f transitions for these two ions represents a typical four-level laser scheme with a considerably larger Stokes shift of 5d–4f luminescence from the edge of the strong spin-allowed 4f–5d absorption than for Nd 3+, which causes smaller reabsorption of emitted VUV radiation in the crystals doped with Er 3+ or Tm 3+. Two crystals LiYF 4: Nd 3+ and SrF 2: Er 3+ were tested for laser action under pumping by a pulsed F 2 laser operating at 157 nm. However, no indications of the appearance of stimulated emission have been detected for both crystals. The possible reasons for the absence of lasing are discussed.

scholarly journals Growth, spectroscopic properties, and laser action of Yb:YPO_4 crystal

2017 ◽  
Vol 7 (10) ◽  
pp. 3618 ◽  
Author(s):  
Liang Yang ◽  
Bing Teng ◽  
Degao Zhong ◽  
Wenjuan Han ◽  
Jie He ◽  
...  
Keyword(s):  
Laser Action ◽  
Spectroscopic Properties

Growth, spectroscopic properties and efficient laser action of an Yb0.09Lu0.13Gd0.78Ca4O(BO3)3 crystal

CrystEngComm ◽  
2020 ◽  
Vol 22 (36) ◽  
pp. 6026-6033
Author(s):  
Fenfen Liu ◽  
Liang Dong ◽  
Junxian Chen ◽  
Shuxuan Cao ◽  
Honghao Xu ◽  
...  
Keyword(s):  
Laser Crystal ◽  
Laser Action ◽  
Czochralski Method ◽  
Spectroscopic Properties ◽  
Ion Laser

A new Yb-ion laser crystal of Yb0.09Lu0.13Gd0.78Ca4O(BO3)3 was grown by using the Czochralski method.

Analysis of Tungstates and Sesquioxides, Two of the Best Yb3+-Doped Laser Crystals According to Different Evaluations.

2001 ◽  
Vol 667 ◽  
Author(s):  
Georges Boulon ◽  
Alain Brenier ◽  
Laetitia Laversenne ◽  
Yannick Guyot ◽  
Christelle Goutaudier ◽  
...  
Keyword(s):  
Emission Cross Section ◽  
Laser Action ◽  
Spectroscopic Properties ◽  
Pump Intensity ◽  
Laser Wavelength ◽  
Group I ◽  
Level Laser ◽  
Growth Method ◽  
Laser Crystals ◽  
Two Parameters

ABSTRACTThe development of reliable InGaAs laser diode pump sources emitting in the 900-980 nm spectral range is stongly influencing the field of lasers based on Yb3+-doped solid state crystals. Ca5(PO4)3F (C-FAP) and S-FAP (Sr5(PO4)3F) were soon recognized to be favourable hosts for Yb3+ lasing in the nanosecond pulse regime. This fact was supported by an evaluation of the spectroscopic properties of several Yb3+-doped crystals useful for laser action. This evaluation is based on two parameters known from spectroscopy, the emission cross-section at the laser wavelength and the minimum pump intensity required to achieve transparency at the laser wavelength.We think there is a need of a new evaluation of Yb3+-doped crystals in order to predict the laser efficiency in a more realistic manner in different kinds of regimes. We present here the main spectroscopic properties of two Yb3+-doped laser crystals which are grown in our Group: (i) KY(WO4)2 double tungstates by the Floating Crystal method and (ii) Y2O3sesquioxides by the Laser Heated Pedestal Growth method. The approach, based on a quasi-three level laser model, leads to compare all known Yb3+-doped crystals in a two-dimensional diagram considering the laser extracted power and the slope efficiency. We shall show that tungstates and sesquioxides belong to the highest laser crystal potential in CW-end pumping configuration.

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