Excited-state absorption at 1.06 /spl mu/m in Nd-doped glasses as the origin of nonunity quantum yield

1998 ◽  
Author(s):  
D. Descamps ◽  
C. Gamache ◽  
D. Husson ◽  
A. Migus
Keyword(s):  
Excited State ◽  
Quantum Yield ◽  
Excited State Absorption ◽  
Doped Glasses

Excited State Absorption and Cross Sections for Er-Doped Glasses

1989 ◽  
Vol 172 ◽  
Author(s):  
S. Zemon ◽  
G. Lambert ◽  
W. J. Miniscalco ◽  
L. J. Andrews ◽  
B. T. Hall
Keyword(s):  
Excited State ◽  
Excited States ◽  
Cross Sections ◽  
Ground State ◽  
Excited State Absorption ◽  
Fiber Amplifiers ◽  
Oscillator Strengths ◽  
Ground State Absorption ◽  
Doped Glasses ◽  
Er Doped

AbstractPump-excited-state-absorption (ESA) measurements on Er3+-doped phosphates, fluorophosphates, and silicate bulk glasses indicate that ESA cross sections are approximately equal to ground state absorption (GSA) cross sections in the 800-nm band. The oscillator strengths of the ESA and GSA bands are also approximately equal, in qualitative agreement with Judd-Ofelt calculations. Fluorozirconate samples were found to have substantial populations in the upper excited states for the measurement conditions used and ESA transitions originating from four excited states were identified. Fluorozirconate fiber amplifiers and lasers at 1.55 μm, therefore, would have decreased efficiency for 800-nm pumping.

Excited-state-absorption cross sections and amplifier modeling in the 1300-nm region for Nd-doped glasses

1992 ◽  
Vol 4 (3) ◽  
pp. 244-247 ◽  
Author(s):  
S. Zemon ◽  
B. Pedersen ◽  
G. Lambert ◽  
W.J. Miniscalco ◽  
B.T. Hall ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross ◽  
Doped Glasses

Excited-State-Absorption Cross Sections and Amplifier Modeling in the 1300-nm Region for Nd-Doped Glasses

1991 ◽  
Vol 244 ◽  
Author(s):  
S. Zemon ◽  
B. Pedersen ◽  
G. Lambert ◽  
W. J. Miniscalco ◽  
B. T. Hall ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Fiber Amplifier ◽  
Stimulated Emission ◽  
Amplifier Model ◽  
Important Region ◽  
Host Materials ◽  
Doped Glasses ◽  
The Cost

ABSTRACTThe performance of Nd3+-doped fiber amplifiers is limited by strong excited state absorption (ESA) of the signal, even for fluorozirconate glasses where ESA prevents the important region below 1320 nm from being used. To quantify this and explore alternative host materials, ESA and stimulated-emission cross sections have been measured for a representative group of glass compositions. These parameters have been used in an accurate, fiber-amplifier model to provide the first quantitative comparisons of performance for Nd3+-doped glasses in the 1300-nm band as a function of host. A high-fluorine fluorophosphate is predicted to extend the short-wavelength boundary of the gain spectrum to 1295 nm but only at reduced gain levels and at the cost of having lower gains at longer wavelengths than fluorozirconates. A substantial increase in small-signal gain is predicted if the amplified spontaneous emission for the 1050-nm band is suppressed.

scholarly journals Optical limiting and excited-state absorption in fullerene solutions and doped glasses

1995 ◽  
Author(s):  
Duncan W. McBranch ◽  
Laura B. Smilowitz ◽  
Victor I. Klimov ◽  
Aaron C. Koskelo ◽  
Jeanne M. Robinson ◽  
...  
Keyword(s):  
Excited State ◽  
Excited State Absorption ◽  
Optical Limiting ◽  
Doped Glasses

Excited-state absorption and up-conversion losses in the Nd-doped glasses for high-power lasers

2000 ◽  
Vol 62 (7) ◽  
pp. 4459-4463 ◽  
Author(s):  
J. L. Doualan ◽  
C. Maunier ◽  
D. Descamps ◽  
J. Landais ◽  
R. Moncorgé
Keyword(s):  
Excited State ◽  
High Power ◽  
Excited State Absorption ◽  
High Power Lasers ◽  
Doped Glasses

scholarly journals 1.7 μm excited state absorption measurement in erbium‐doped glasses

1995 ◽  
Vol 67 (4) ◽  
pp. 470-472 ◽  
Author(s):  
José E. Román ◽  
Martin Hempstead ◽  
Chenchun Ye ◽  
Salim Nouh ◽  
Patrice Camy ◽  
...  
Keyword(s):  
Excited State ◽  
Excited State Absorption ◽  
Absorption Measurement ◽  
Erbium Doped ◽  
Doped Glasses
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