Study on self-mixing interference effect with compensative cavity
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Department of Foundational Teaching, Tangshan College, Tangshan 063000, China;
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2.
School of Science, Hebei University of Technology, Tianjin 300130, China
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Received Date:
2009-01-15
Accepted Date:
2009-03-19
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Abstract
In order to increase the measuring distance and improve the interference signal, Eased on conventional three-mirror structure, a new structure with a compensative mirror in the external cavity was put forward.The new structure was studied experimentally and theoretically. The experimental results showed that the measuring distance increased from 20cm to 60cm, signals with a compensative mirror were strengthened and more stable than those without compensative mirrors.The experimental results also showed that different results produced for different location and reflectivity of the compensative mirror. Based on propagating theory,the model of the structure was deduced, and simulated by means of MATLAB software.The simulation results agreed well with those of experimental results.The results showed that the compensative structure conquered many weaknesses of the conventional self-mixing system.It has provided a useful reference for self-mixing interference measurement in practical way.
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References
|
[1]
|
ZHANG Y,YAO J Q,WANG P,et al.Study on self-mixing interference effects in the LD pumped multi-mode solid-state laser[J].Transactions of Tianjin University,2003,9(4):261-263(in Chinese). |
|
[2]
|
ZHANG Y,YAO J Q,WANG P,et al.Study on self-mixing interference effects in LD pumped single-mode green laser[J].Journal of Optoelectronics·Laser,2003,14(7):679-682 (in Chinese). |
|
[3]
|
PAONE N,SCALISE L.Advances in self-mixing vibrometry[J].Proc SPIE,2001,4204:103-114. |
|
[4]
|
YU Y G,YE H Y,YAO J Q.Self-mixing interference effects in a multi-mode LD:experimental observation and theoretical analysis[J].Journal of Optoelectronics·Laser,2002,13(11):1190-1193 (in Chinese). |
|
[5]
|
SHIMIZU E T.Directional discrimination in the self-mixing type laser doppler velocimeter[J].Appl Opt,1987,26 (2):4541-4544. |
|
[6]
|
ZHANG Y,YU Y G,YAO J Q,et al.Analysis of self-mixing interference signals in LD pumped solid-state lasers using fast Fourier transform technique[J].Proc SPIE,2002,4919:488-492. |
|
[7]
|
ZHANG Y,YAO J Q,XU K X,et al.New study on self-mixing interference effects in LD pumped laser[J].Proc SPIE,2005,5628:263-270. |
|
[8]
|
WANG W M,BOYLE W J,GRATTAN K T V,et al.Self-mixing interference in a diode laser:experimental observations and theoretical analysis[J].Appl Opt,1993,32(9):1551-1558. |
|
[9]
|
LI Sh Y,YU Y G,YE H Y,et al.The estimation of the parameters in the model of the selfmixing effect in semiconductor lasers[J].Laser Technology,2005,29(5):519-521 (in Chinese). |
|
[10]
|
YU Y G,GUO Ch Y,YE H Y,et al.Pre-processing for the optical feedback self-mixing interferomitric signal,feedback[J].Laser Technology,2008,32(3):265-268 (in Chinese). |
|
[11]
|
YAN Y X,YU Y G.An improved algorithm for estimating parameters of semiconductor lasers[J].Laser Technology,2008,32(4):353-356 (in Chinese). |
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