Diode-pumped solid-state laser having a thermal lens inside...

Details Diode-pumped solid-state laser having a thermal lens inside... Diode-pumped solid-state laser having a thermal lens inside...

2007-02-13

2007-02-13

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular pumping means

C070S072000

Reexamination Certificate

active

10527705

ABSTRACT:
Disclosed is a diode-pumped solid-state laser having an asymmetrical optical resonator provided with at least two resonator mirrors, inside said resonator being provided at least one thermal lens having an optical refractive power D and having two principal planes respectively and said resonator being definable by the following stability criteria:in-line-formulae description="In-line Formulae" end="lead"?0<G1·G2<1in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?within-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?G1=1−L*/R1−D·d2in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?G2=1−L*/R2·D·d1in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?andin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?L*=d1+d2−D·d1·d2in-line-formulae description="In-line Formulae" end="tail"?d1,d2the distances of the resonator mirror from the principal planes of the thermal lensR1, R2the radii of curvature of the resonator mirrors.The invention is distinguished by the values d1,d2,R1and R2being selected in such a manner that the following critical refractive powers DI,DII,DIIIand DIV, for whichDI=-1R1-d1-1R2-d2,DII=1d2-1R1-d1,DIII=1d1-1R2-d2,DIV=1d1+1d2applies, the following equations are fulfilled:in-line-formulae description="In-line Formulae" end="lead"?DII−DI=DIV−DIII≧8 dptr.in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?|DIII−DII|≧2 dptr.in-line-formulae description="In-line Formulae" end="tail"?

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