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 of a Phosphine-substituted Bithiophene

2009 ◽  
Author(s):  
Timothy M. Pritchett ◽  
Jianwei Wang ◽  
Christopher M. Lawson ◽  
Qun Zhao ◽  
Gary M. Gray
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross

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 of 4I13/2 of Er3+ in ZBLAN

2009 ◽  
Vol 31 (11) ◽  
pp. 1658-1662 ◽  
Author(s):  
Bo Wang ◽  
Lihong Cheng ◽  
Haiyang Zhong ◽  
Jiashi Sun ◽  
Yue Tian ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Excited State Absorption ◽  
Absorption Cross

Z-scan measurement of the ground and excited state absorption cross sections of Cr/sup 4+/ in yttrium aluminum garnet

1999 ◽  
Vol 35 (7) ◽  
pp. 1086-1091 ◽  
Author(s):  
Guohua Xiao ◽  
Jin Hong Lim ◽  
S. Yang ◽  
E. Van Stryland ◽  
M. Bass ◽  
...  
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Yttrium Aluminum Garnet ◽  
Excited State Absorption ◽  
Absorption Cross ◽  
Yttrium Aluminum

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.

NONLINEAR OPTICAL RESPONSE AND REVERSE SATURABLE ABSORPTION OF RARE EARTH PHTHALOCYANINE IN DMF SOLUTION

2003 ◽  
Vol 12 (03) ◽  
pp. 367-376 ◽  
Author(s):  
G. A. KUMAR
Keyword(s):  
Rare Earth ◽  
Excited State ◽  
Cross Sections ◽  
Nonlinear Optical ◽  
Excited State Absorption ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Saturable Absorption ◽  
Reverse Saturable Absorption ◽  
Absorption Cross

Nonlinear optical response and reverse saturable absorption behavior of various rare earth phthalocyanines such as Nd , Eu , Sm and La in dimethyl formamide (DMF) solution were studied under high power Nd:YAG laser excitation. Excited state absorption cross-sections and two-photon absorption cross-sections of these systems are measured from the limiting characteristics. The SmHPc 2 system yields maximum value for excited state absorption cross-section and its potential application in DMF as a suitable optical limiter is also discussed.

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