Holographic DFB laser with fan-shaped grating for a spectrofluorimeter

A method for recording fan-shaped transmitting phase holographic gratings that ensure tuning of the wavelength of emission for a DFB (distributed-feedback) dye laser is presented. Traditional optical elements are used in the scheme of grating recording. A change in the degree of grating fanning is reached here without replacement of gratings. The possibility of obtaining frequency-tuned emission by means of the fan-shaped gratings created is demonstrated experimentally. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 67, No. 1, pp. 48–51, January–February, 2000.