Manufacturing Methods and Technology Engineering for 'Growth of Large Diameter Nd:YAG Laser Crystals'

1982 ◽  
Author(s):  
Robert Uhrin ◽  
Roger F. Belt
Keyword(s):  
Nd:Yag Laser ◽  
Large Diameter ◽  
Laser Crystals ◽  
Manufacturing Methods

Growth of large-size Nd:YAG laser crystals (Poster Paper)

1992 ◽  
Author(s):  
Yongzong Zhou ◽  
Haiping Xia ◽  
Zhixian Huang ◽  
Minhua Lu ◽  
Peizhen Deng ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Large Size ◽  
Poster Paper ◽  
Laser Crystals

Photonic crystal structure in Nd:YAG laser crystals

2012 ◽  
Vol 34 (11) ◽  
pp. 1811-1814 ◽  
Author(s):  
Qiang An ◽  
Ningning Dong ◽  
Feng Chen ◽  
Weihua Lin
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Nd:Yag Laser ◽  
Photonic Crystal Structure ◽  
Laser Crystals

Thermo-optical and spectroscopic properties of Nd:YAG fine grain ceramics: towards a better performance than the Nd:YAG laser crystals

2016 ◽  
Vol 13 (2) ◽  
pp. 025004 ◽  
Author(s):  
W Q Santos ◽  
A Benayas ◽  
D Jaque ◽  
J García-Solé ◽  
T Catunda ◽  
...  
Keyword(s):  
Nd:Yag Laser ◽  
Spectroscopic Properties ◽  
Fine Grain ◽  
Laser Crystals

Growth of highly doped Nd:YAG laser crystals

2000 ◽  
Author(s):  
Jun Xu ◽  
Yongzong Zhou ◽  
Hongjun Li ◽  
Peizhen Deng
Keyword(s):  
Nd:Yag Laser ◽  
Laser Crystals

Transport Phenomena in Growth and Annealing of Laser Crystals

2006 ◽  
Author(s):  
H. S. Fang ◽  
D. Cai ◽  
H. Zhang ◽  
L. L. Zheng
Keyword(s):  
Process Model ◽  
Radiative Heat ◽  
Transport Phenomena ◽  
Large Diameter ◽  
Czochralski Method ◽  
Effect Of Temperature ◽  
Power Change ◽  
Growth System ◽  
Laser Crystals ◽  
The Relationship

Cloudiness, bubble core defects, anomalous absorption, low-angle grain boundaries, and cracking are the main problems in the growth of high quality and large diameter (>7cm) Yb:S-FAP crystals utilizing the Czochralski method. The generation mechanism of these defects is highly related to transport phenomena in the growth system. In this paper, firstly, inductive, conductive and radiative heat transport phenomena are examined in the entire growth system. Then, an integrated modeling and experimental study is presented to determine an efficient means to eliminate or reduce crystal cracking during cooling. A process model has been developed to simulate the crystal cooling process. The effect of temperature distribution on thermal stress in the crystal during cooling is predicted by a simple but effective computational algorithm. With the relationship between the power change and crystal surrounding temperature change, the process model is further used to optimize power ramp-down profile to avoid cracking of the crystal during cooling-down process.

Design and application of a single-mode Nd:YAG laser with self-pumped phase conjugation in laser crystals and saturable absorber

1999 ◽  
Author(s):  
Oleg L. Antipov ◽  
Tasoltan T. Basiev ◽  
Alexander V. Fedin ◽  
Andrey V. Gavrilov ◽  
Alexander S. Kuzhelev ◽  
...  
Keyword(s):  
Saturable Absorber ◽  
Nd:Yag Laser ◽  
Phase Conjugation ◽  
Single Mode ◽  
Laser Crystals ◽  
Design And Application

Paper 9: Fretting Fatigue in Keyed Dovetail Root Fixings

1969 ◽  
Vol 184 (2) ◽  
pp. 66-74 ◽  
Author(s):  
P. G. Morton ◽  
P. J. Goodman ◽  
Z. M. Kawecki
Keyword(s):  
Large Diameter ◽  
Tensile Load ◽  
Fretting Fatigue ◽  
Full Scale ◽  
Dramatic Improvement ◽  
Salient Pole ◽  
Fundamental Investigation ◽  
Consistent Manner ◽  
Cause Of Failure ◽  
Manufacturing Methods

Dovetail pole root fixings, consolidated by tapered keys, are a feature of many large-diameter salient pole alternator rotors. This paper describes an investigation into the failure in service of such a fixing; the failure being ascribed to fretting fatigue and resulting from a combination of tensile centrifugal loadings and superimposed oscillatory loading. The failures were reproduced on a series of full-scale joint sections and the design of a special rig, capable of applying typical oscillatory forcing superimposed upon a steady tensile load of 100 tons, is described. The rig was used to assess quantitatively the effect of various measures taken to eliminate the cause of failure. The test specimens were hand fitted to normal manufacturing methods and, despite the inevitable variations in fit, failed in a consistent manner. The results of the tests provide a practical example of fretting fatigue, and are generally in line with the findings of a fundamental investigation using small specimens and published in 1967 by Field and Waters. The dramatic improvement resulting from relatively minor geometrical changes is clearly demonstrated.

Corrections to "Electronic changes of refractive index in intensively pumped Nd:YAG laser crystals"

2003 ◽  
Vol 39 (9) ◽  
pp. 1170-1170
Author(s):  
Oleg L. Antipov ◽  
Oleg N. Eremykin ◽  
Alexander P. Savikin ◽  
Vladimir A. Vorobev ◽  
Dimitry V. Bredikhin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Nd:Yag Laser ◽  
Laser Crystals

Electronic changes of refractive index in intensively pumped Nd:YAG laser crystals

2003 ◽  
Vol 39 (7) ◽  
pp. 910-918 ◽  
Author(s):  
O.L. Antipov ◽  
O.N. Eremeykin ◽  
A.P. Savikin ◽  
V.A. Vorob'ev ◽  
D.V. Bredikhin ◽  
...  
Keyword(s):  
Refractive Index ◽  
Nd:Yag Laser ◽  
Laser Crystals
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