Investigating the output characteristics of Ring Laser in Laser Dynamic Goniometer

Research paper by N.A. Eno, P.A. Pavlov J.T. Bagshaw

Indexed on: 24 Dec '18Published on: 21 Dec '18Published in: Journal of physics. Conference series


Lately, it becomes a pressing need for increasing the accuracy in measurements and calibration of optical polygon using laser dynamic goniometer, therefore the need to understudy the output characteristics of Ring laser which is used as the reference scale during this measurement of refractive indices, calibration of optical polygon and in building of laser dynamic goniometer using high precision goniometer along with the optical angle encoder. This paper covers algorithms, procedures of operation, and results of the investigations, as well as the calculations of coefficient characterizing the null shift of ring laser output, the scale factor, coefficient characterizing the nonlinearity of ring laser output and graph of dependency. This article also shows that, the algorithm for compensating of the ring laser generalized zero shifts increases the accuracy of the angular measurements and makes it possible to determine the coefficients of the ring laser output characteristic.