Objective: Frequency doubling inside the resonator of a Nd:YAG laser
Materials often change their optical properties in strong electromagnetic fields. For instance, it is possible for the frequency of high-intensity laser light passing through such materials to be doubled. In this experiment, a KTP (potassium titanyl phosphate) crystal is used to generate green light with a wavelength of 532 nm from the 1064-nm infra-red radiation output by an Nd-YAG laser by means of frequency doubling. The crystal is suitable in a number of respects, such as its strongly non-linear optical characteristics, and its low absorption of radiation at the original frequency and double the frequency.
Materials often change their optical properties in strong electromagnetic fields. For instance, it is possible for the frequency of high-intensity laser light passing through such materials to be doubled. In this experiment, a KTP (potassium titanyl phosphate) crystal is used to generate green light with a wavelength of 532 nm from the 1064-nm infra-red radiation output by an Nd-YAG laser by means of frequency doubling. The crystal is suitable in a number of respects, such as its strongly non-linear optical characteristics, and its low absorption of radiation at the original frequency and double the frequency.
