Document Detail


End-pumped Nd:YAG laser with a longitudinal hyperbolic dopant concentration profile.
MedLine Citation:
PMID:  19030096     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
An approach for scaling end-pumped rod lasers to high output powers by employing a crystal with a continuously varying, nearly hyperbolic dopant concentration profile, resulting in a homogenization of the longitudinal temperature distribution, is presented. The crystal is characterized by determining its dopant concentration profile with an absorption measurement. The fluorescence upon spectrally narrow excitation is recorded, indicating the role of quenching of the upper laser level at high dopant concentration. The on-axis temperature distribution is calculated by employing a Fourier-Bessel approach for solving the stationary heat conduction equation, taking the temperature dependence of the heat conductivity and the dependence of the heat fraction on the dopant concentration into account. Experimentally, a maximum output power of 187 W at an optical-to-optical efficiency of 53 % has been demonstrated.
Authors:
Ralf Wilhelm; Denis Freiburg; Maik Frede; Dietmar Kracht
Related Documents :
16609166 - Performance limits of direct cryogenically cooled silicon monochromators - experimental...
20596486 - Heat conduction of air in nano spacing.
19392056 - Extraordinary increase of lifetime of localized cold clouds by the viscous effect in th...
17614626 - In situ laser heating and radial synchrotron x-ray diffraction in a diamond anvil cell.
17155076 - Perturbative approach to the structure of a planar interface in the landau-de gennes mo...
17261536 - Calibration of a phoswich type partial body counter by monte carlo simulation of low-en...
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Optics express     Volume:  16     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-11-25     Completed Date:  2009-03-19     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  20106-16     Citation Subset:  -    
Affiliation:
Laser Zentrum Hannover e. V., Hollerithallee 8, D-30419 Hannover, Germany. r.wilhelm@lzh.de
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Polarization effects in a highly birefringent nonlinear photonic crystal fiber with two-zero dispers...
Next Document:  Surface-enhanced Raman scattering at a planar dielectric interface beyond critical angle.