Intensity stabilisation of an argon laser using an electro-optic modulator —Performance and limitations

Applied Physics B - Tập 39 - Trang 149-153 - 1986
N. A. Robertson1, S. Hoggan1, J. B. Mangan1, J. Hough1
1Department of Natural Philosophy, University of Glasgow, Glasgow, UK

Tóm tắt

An intensity-stabilisation system for an argon laser using an electro-optic modulator is described. We achieved a degree of stabilisation of up to 40 dB (factor of 100) for intensity fluctuations below a few kHz. The performance in this frequency range did not reach that expected from the available loop gain. We have identified two serious limiting factors to the performance of our system at low frequency: geometrical fluctuations and frequency fluctuations of the laser light.

Tài liệu tham khảo

J.L. Hall: Private communications to J.H. on his original experiments with J.J. Snyder and experience with noise reduction systems. Such a system on a cw dye laser achieved >60 dB suppression from de to 10 kHz, >40 dB from 10 kHz to 100 kHz and >10 dB from 100 kHz to 1 MHz Coherent Associates: Manual on Model 307, “Noise Eater” J. Hough, S. Hoggan, G.A. Kerr, J.B. Mangan, B.J. Meers, G.P. Newton, N.A. Robertson, H. Ward, R.W.P. Drever:Lecture Notes Phys. 212, 204–212 (Springer, Berlin, Heidelberg 1984) A. Yariv:Quantum Electronics, 2nd ed. (Wiley, New York 1975) Chap. 14 J.L. Hall, H.P. Layer, R.D. Deslattes: IEEE/OSA Conf. on Laser Engineering and Applications. Digest of Papers [IEEE Cat. No. 77 CH-1207.0] p. 45 (1977) H.P. Layer: Appl. Opt.18, 2947–2949 (1979) R.W.P. Drever, J.L. Hall, F.V. Kowalski, J. Hough, G.M. Ford, A.J. Munley, H. Ward: Appl. Phys. B31, 97–105 (1983) A. Rudiger, R. Schilling, L. Schnupp, W. Winkler, H. Billing, K. Maischberger: Optica Acta28, 641–658 (1981) B.J. Meers, G.P. Newton, R.W.P. Drever: In preparation