TABLE I.
Imaging method | Physical observables | Penetration of probe | Frame rate (Hz) |
---|---|---|---|
Absorption microscopy [57] | Optical absorption | Optical field | ~ 100 |
Polarization microscopy [58] | Birefringence or dichroism | Optical field | ~ 100 |
Differential interference contrast [59] | Refractive index | Optical field | ~ 50 |
Resonance Raman microscopy [60] | Vibrational structure | Intense optical field | ~ 1 |
Third-harmonic generation [17] | Crystal structure | Intense optical field | ~ 1 |
Diamond magnetic microscopy (this study) | Magnetic moment | dc or ac magnetic field | ~ 1 |