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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.12
- 수록면
- 649 - 654 (6page)
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초록· 키워드
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In this communication, we present an expression to determine thermal lensing in isotropic materials.
The heat equation is analytically solved when a Gaussian spatial laser beam profile is introduced to acylindrical geometry of optics using a complete set of Bessel functions. This expression permits explicitcalculation of variation of focal length induced by thermal lensing and allows thermal effects for variousmaterial parameters on the optics. We applied our model to a high absorption material (Ti:sapphire) andalso transparent material (thallium garnet or TGG) and found that the thermal lensing can be reduced morethan 4 times by adjusting the laser beam waist and optics dimensions. Our analysis is completely generaland applicable to any optical system.
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