Delocalization Mach Number in Aeroacoustics

A stack of gradient-index (GRIN) rod lenses cannot be used for coherent anti-Stokes Raman scattering (CARS) microendoscopy for insertion to internal organs through a surgical keyhole with minimal invasiveness. That's because GRIN lens has large amount of inherent chromatic aberrations in spite of absolutely requiring a common focus for pump and Stokes beam with each frequency of ωp and ωS. For this endoscopic purpose, we need to develop a long slender probe-type objective, namely probe-type microscope objective (PMO). In this paper, we introduce the structure, the working principle, and the design techniques of PMO which is composed of a probe-type lens module (PLM) and an adaptor lens module (ALM). PLM is first designed for a long slender type and ALM is successively designed by using several design parameters from PLM for eliminating optical discords between scanning unit and PLM. A combined module is optimized again to eliminate some coupling disparities between PLM and ALM for the best PMO. As a result, we can obtain a long slender PMO with perfectly diffraction-limited performance for pump beam of 817 nm and Stokes beam of 1064 nm.

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Design of an Endoscopic Microscope Objective Composed of GRIN(Gradient-Index) Lens with Scanning Devices

Kim¹,

Rim²

2009

Korean Journal of Optics and Photonics

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GRIN 렌즈로 구성된 주사방식의 내시현미경 대물렌즈의 설계김경정ㆍ임천석 Design of an EndoscopicWe present an attractive real time in-vivo endoscopic microscope with a resolution of submicron, in which two kinds of optical correcting plates are inserted to eliminate higher order spherical aberration and field curvature. And, since the conventional objective lens is replaced to GRIN lenses with diameter of 1 mm, the above endoscopic microscope can be effectively utilized to invade minimally for live animals. 는 미미한 실정이다. 독일의 막스플랑크 연구소 [2] , 미국의 벨 연구소 [3] , 미국의 코넬 [4] , 스텐퍼드 [5] , 하버드 대학 [6][7] , 영국의 옥스포드 대학

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Delocalization Mach Number in Aeroacoustics

Cited by 3 publications

References 0 publications

Optimal Design of Chip-on-the-Tip Endoscope with a Large Depth of Field

Optimal Design of Chip-on-the-Tip Endoscope with a Large Depth of Field

The Optical Design of Probe-type Microscope Objective for Intravital Laser Scanning CARS Microendoscopy

Design of an Endoscopic Microscope Objective Composed of GRIN(Gradient-Index) Lens with Scanning Devices

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