![]() Raman spectroscopy.įigure 1: Use of a dichroic mirror as a harmonic separator. A similar situation occurs in various methods of spectroscopy, e.g.In laser microscopy ( fluorescence microscopy), a dichroic mirror can be used for separating the fluorescence light (containing the image information) from the pump light.In the case of external frequency doubling, a dichroic mirror may be used as harmonic separator (see Figure 1), i.e., as a kind of wavelength-dependent beam splitter.In a laser with intracavity frequency doubling, a dichroic end mirror may couple out the harmonic light while fully reflecting the pump wave.In a diode-pumped laser, a dichroic short-pass mirror in the resonator, placed next to the laser crystal, may be used for injecting pump light, while the circulating laser light is reflected to nearly 100%.The dichroic property relates to one of two possible meanings of the term dichroism.ĭichroic mirrors are applied for different purposes. Similar broadband devices are called hot mirrors or cold mirrors, depending on whether they reflect or suppress heat radiation. for reflecting only ultraviolet light to some application but not so much infrared light which could lead to unwanted heating of the irradiated objects. Some dichroic reflectors are used for broadband applications, e.g. ![]() There are also trichroic mirrors, having defined optical properties at three different wavelengths. The specifications often refer to frequently used laser lines, so that dichroic mirrors are often belonging to the category laser line optics. How to cite the article suggest additional literatureĪ dichroic mirror (or dual-band mirror, dual-wavelength mirror, dichroic reflector) is a mirror with significantly different reflection or transmission properties at two different wavelengths – actually meaning two wavelength regions of some often not so large width. German: dichroische Spiegel, dichroitische Spiegel Definition: mirrors with significantly different reflection or transmission properties at two different wavelengthsĪlternative terms: dual-wavelength mirrors, dual-band mirrors, dichroic reflectors
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |