Direct measurement of laser power through a high numerical aperture oil immersion objective lens using a solid immersion lens

2002 ◽  
Vol 73 (5) ◽  
pp. 2011-2015 ◽  
Author(s):  
Shigeki Matsuo ◽  
Hiroaki Misawa
Keyword(s):  
Direct Measurement ◽  
Laser Power ◽  
Numerical Aperture ◽  
Objective Lens ◽  
Solid Immersion Lens ◽  
High Numerical Aperture ◽  
Oil Immersion

Microspectroscopy Using a Solid Immersion Lens

2001 ◽  
Vol 7 (S2) ◽  
pp. 148-149
Author(s):  
C.D. Poweleit ◽  
J Menéndez
Keyword(s):  
Spatial Resolution ◽  
Focal Plane ◽  
Numerical Aperture ◽  
Normal Incidence ◽  
Spot Size ◽  
Index Of Refraction ◽  
Objective Lens ◽  
Improvement Factor ◽  
Oil Immersion ◽  
Long Time

Oil immersion lenses have been used in optical microscopy for a long time. The light’s wavelength is decreased by the oil’s index of refraction n and this reduces the minimum spot size. Additionally, the oil medium allows a larger collection angle, thereby increasing the numerical aperture. The SIL is based on the same principle, but offers more flexibility because the higher index material is solid. in particular, SILs can be deployed in cryogenic environments. Using a hemispherical glass the spatial resolution is improved by a factor n with respect to the resolution obtained with the microscope’s objective lens alone. The improvement factor is equal to n2 for truncated spheres.As shown in Fig. 1, the hemisphere SIL is in contact with the sample and does not affect the position of the focal plane. The focused rays from the objective strike the lens at normal incidence, so that no refraction takes place.

scholarly journals Focal Surface Detection of High Numerical Aperture Objective Lens Based on Differential Astigmatic Method

2021 ◽  
Vol 13 (4) ◽  
pp. 1-8
Author(s):  
Jia-Lin Du ◽  
Wei Yan ◽  
Li-Wei Liu ◽  
Fan-Xing Li ◽  
Fu-Ping Peng ◽  
...  
Keyword(s):  
Numerical Aperture ◽  
Objective Lens ◽  
High Numerical Aperture ◽  
Surface Detection ◽  
Focal Surface

Calibration of polarization effect of a high-numerical-aperture objective lens with Mueller matrix polarimetry

2018 ◽  
Vol 30 (2) ◽  
pp. 025201
Author(s):  
Chao Chen ◽  
Xiuguo Chen ◽  
Honggang Gu ◽  
Hao Jiang ◽  
Chuanwei Zhang ◽  
...  
Keyword(s):  
Polarization Effect ◽  
Numerical Aperture ◽  
Mueller Matrix ◽  
Objective Lens ◽  
High Numerical Aperture

Evaluation of Anisotropic Biaxial Stress by Raman Spectroscopy with a High Numerical Aperture Immersion Objective Lens

2010 ◽  
Vol 49 (4) ◽  
pp. 04DA21 ◽  
Author(s):  
Daisuke Kosemura ◽  
Munehisa Takei ◽  
Kohki Nagata ◽  
Hiroaki Akamatsu ◽  
Ryosuke Shimidzu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Numerical Aperture ◽  
Biaxial Stress ◽  
Objective Lens ◽  
High Numerical Aperture
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