Development of Microscopy Apparatus Switchable between Fluorescence and Ultralow-Frequency Raman Modes

Figure 1

Schematic illustration of the apparatus. The purple line represents the microscope. (a) Fluorescence microscopy mode. VBG: volume Bragg grating. BP: band-pass filter. DC: dichroic filter. LP: long-pass filter. HM: half mirror. (b) Fluorescence image of the sample. (c) Spatial selection of a single crystal by the slits of the monochromator. (d) Fluorescence spectrum of the selected crystal. (e) Ultralow-frequency Raman microscopy mode. (f) Spatial selection of a single crystal by the slits of the monochromator. (g) Raman spectrum of the selected crystal.

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