Title :
A theoretical model of magneto optic scanning laser microscopy
Author :
Wright, C.D. ; Nutter, P.W. ; Filbrandt, P.W.M.
Author_Institution :
Manchester Sch. of Eng., Manchester Univ., UK
fDate :
7/1/1996 12:00:00 AM
Abstract :
A complete, scalar diffraction based, mathematical analysis Is presented for evaluating the response of both ordinary (reflectance) and magneto-optic confocal and non-confocal scanning laser microscopes. Magneto-optic configurations employing both single and differential detector arrangements are analyzed. A transfer function approach is adopted that enables the imaging properties of the optical system to be separated out from the properties of the object. It is therefore straightforward to compare quantitatively the imaging performance of different optical arrangements. A particularly interesting result is that the impulse response of a magneto-optic scanning laser microscope with the commonly used differential detection technique is identical to that of a simple incoherent reflectance microscope
Keywords :
magneto-optical sensors; optical design techniques; optical images; optical microscopy; optical transfer function; transient response; differential detection technique; imaging properties; impulse response; incoherent reflectance microscope; magneto optic scanning laser microscopy; magneto-optic confocal scanning laser microscope; magneto-optic nonconfocal scanning laser microscope; optical system; scalar diffraction based mathematical analysis; single detector arrangement; theoretical model; transfer function approach; Detectors; Laser modes; Laser theory; Magnetic force microscopy; Magnetic separation; Mathematical analysis; Optical diffraction; Optical imaging; Optical microscopy; Reflectivity;
Journal_Title :
Magnetics, IEEE Transactions on