Characteristics of a cascaded grating multi wavelength dye laser. (December 2016)

• Record Type: Journal Article
• Authors: Rana, Paramjit; Sridhar, G.; Manohar, K.G.
• Is Part Of: Optics & laser technology. Volume 86(2016)
• Page Start: 39
• Page End: 45
• Publication Date: 2016-12
• Subjects: Four wavelength operation -- Cascaded grazing incidence grating resonator -- Hybrid cascaded grazing incidence grating resonator -- Gain competition effect -- Wavelength zones of operation; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2016.06.011
• Languages: English
• ISSNs: 0030-3992

Abstract

Abstract: Characteristics of a multi wavelength dye laser in two cascaded grating resonator configurations are presented. DCM dye dissolved in ethanol, was transversely pumped by second harmonic of Nd:YAG laser and four wavelength, independently tunable, collinear dye laser operation was obtained in Cascaded Grazing Incidence Grating cavity (CGIG) and Hybrid CGIG with fourth grating in Littrow angle (HCGIG) configuration. Gain competition effect of all the sub-cavities was fully characterized and wavelength zones of operation were identified for each cavity for sustaining four wavelength operation. Overall efficiency of the oscillator was measured to be around 2% in CGIG and 7% in HCGIG. Highlights: Four wavelength operation of a dye laser in two different resonators is presented. Gain competition characteristics of Cascaded GIG resonator are established. Details of gain competition effects in Hybrid Cascaded GIG cavity are obtained. Wavelength zones of operation were identified for all the sub-cavities. Independent tunability and narrow line width operation is achieved.