Electromagnetic radiation providing device for use in test medium examining arrangement, has radiation source for generating electromagnetic radiations, where intensity of radiations is modulated depending upon space ranges of radiations

摘要

The device has a radiation source (LQ) i.e. laser diode, for generating electromagnetic radiations e.g. infrared radiation, where the device is arranged in such a manner that the radiation of the electromagnetic radiations is occurred in different space ranges. An intensity of the electromagnetic radiations is modulated depending upon the space ranges of the electromagnetic radiations. A variation of the intensity of the electromagnetic radiation is utilized as modulation with a modulating frequency. The radiation source generates electromagnetic radiations e.g. optical radiation such as visible light, infrared radiation, ultraviolet radiation, microwave and monochromatic radiation. Independent claims are also included for the following: (1) a method for providing electromagnetic radiation (2) a method for examining a test medium by dispersion.