在本論文裡，我們以一台Coherent公司所生產的532nm的連續波綠光雷射當作激發光源，經由倍頻後，產生266nm的紫外光雷射。雷射共振腔通常會受到各種擾動，而單縱模雷射可利用電路系統來鎖住它的共振頻率。我們使用了Pound-Drever-Hall穩頻系統來控制共振腔長。這方法利用了腔外的相位調變器藉以產生邊帶來穫得共振腔擾動的訊息。最後再把這訊號經電路處理後回授至PZT來穩定共振腔長變化。而回授電路的性能將在本論文?堸等J細分析。

In this work, we use Coherent produced 532nm cw laser as pump source, and 266nm is obtained by frequency doubling. The ring cavity of a laser is generally subject to various perturbation, and the stability of a single-mode laser can be improved by electronically locking its frequency. We use a Pound-Drever-Hall laser frequency stabilization system to control the cavity length. This method utilizes an external phase modulator to produce the sideband and is capable of detecting weak signal to get the information of cavity disturbation. Finally, the signal is dealt with electrical circuit and then feedback to a PZT to control the stabilization of the cavity length.

中文摘要 …………………………………………………………… Ⅰ
英文摘要 ………………………….………………………… ……... Ⅱ
目錄 ……………………………………………………………….... Ⅲ
圖目錄 ……………………………………………………………… Ⅳ
表目錄 …………………………………………………………...…. Ⅴ
第一章: 導論 ……………………………………………………… 1
第二章: 連續波紫外光雷射系統之原理與設計 ………………… 3
2-1雷射系統架設與原理 ……………………………….. 3
2-1-1 系統架設 ……………………………………... 3
2-1-2 二次倍頻原理 ………………………………... 7
2-1-3 非線性晶體BBO簡介 ………………………. 12
2-2電路系統架構 ……………………………………….. 16
第三章: 回授控制系統之原理與技術 ……………………………18
3-1 相位調變原理 ………………………………………. 18
3-2 回授控制系統之技術 ………………………………. 23
第四章: 實驗架構與分析 …………………………..…………… 29
4-1 Pound-Drever-Hall system之電路設計 ……………. 29
4-2 PZT之特性量測 ……………………………………. 33
4-3 實驗量測與結果分析 ………………………………. 36
4-3-1迴授前的量測與分析 ………………..…….…. 36
4-3-2回授至共振腔的量測與分析 ………..……….. 45
第五章: 結論與未來展望 ………………………………………… 48
參考文獻 …………………………………………………………… 49

[1] R. Larose, D. Stepanov, C. Latrasse, M. Tetu, F. Ouellette and M.A. Duguay, “ Simple frequency tuning technique for locking a singlemode erbium-doped fiber laser to the center of molecular resonances ,”Electronics Letters, Vol. 30, No. 10, May (1994).
[2] Oded Mor and Ady Arie, Member, “ Performance Analysis of Drever-Hall Laser Frequency Stabilization Using a Proportional + Integral Servo ,”IEEE J. of Quantum Electronics Vol. 33, No. 4, , April (1997).
[3] Zhi-Ren Zheng and Jin-Yue Gao, “ Dynamic Behavior of the Frequency-Locking in a Hybrid Bistable System with Delay and Input Modulation ,” IEEE J. of Quantum Electronics, March (1996).
[4] Stephen P. Sandford and Charles W. Antill, Jr. “ Laser Frequency Control Using an Optical Resonator Locked to an Electronic Oscillator ,” IEEE J. of Quantum Electronics, Vol. 33, 1991 November (1997).
[5] Gary C. Bjorklund, “ Frequency-modulation spectroscopy: a new method for measuring weak absorptions and dispersions ,” Optics Letters, Vol. 5, No. 1, January (1980).
[6] S. Sayama , M. Ohtsu, “ Tunable UV CW generation at 276 nm wavelength by frequency conversion of laser diodes ,”Optics Commun. 145, 95, January (1998).
[7] 李育宗, ”國立中山大學物理研究所碩士論文”, (1998)
[8] B. C. Johnson, V. J. Newell, J. B. Clark, and E. S. McPhee, Opt. Soc. Am,Vol. 12, No. 11, November(1995).
[9] T. W. HANSCH and B. COUILLAUD, “ LASER FREQUENCY STABILIZATION BY POLARIZATION SPECTROSCOPY OF A REFLECTING REFERENCE CAVITY ,” Opt. Commun., vol. 35,
441 (1980).
[10] D. Chen, D. Hinkley, J. Swenson, and R. Fields, “ Single Frequency Low Threshold CW 3 Micron PPLN OPO ,”Advanced Solid State Lasers,241,(1997)
[11] J.K. Brasseur, K.S. Repasky, J.L. Carlsten, “ Continuous wave raman laser in H2 ,”CLEO’98
[12] 丁勝懋, “雷射工程導論”.
[13] R. W. P. Drever, J. L. Hall and F. V. Kowalski, J. Hough, G. M. Ford, A. J. Munley, and H. Ward, “ Laser Phase and Frequency Stabilization Using Resonator ,”Appl. Phys. B31, 97 (1983).
[14] K. Kondo, M. Oka, H. Wada, T. Fukui, N. Umezu, K. Tatsuki, and S.Kubota, “ Demonstration of long-term reliability of a 266-nm, continuous-wave, frequency-quadrupled solid-state laser using β-BaB2O4 ,”Opt. Lett., Vol.23, 195 (1998).
[15] M. Oka, L. Y. Liu, W. Wiechmann, N. Eguchi, and S. Kubota,
IEEE J. Sel. Topics Quantum Electronics, Vol. 1, 859 (1995).
[16] K. KATO, “ Second-Harmonic Generation to 2048 Å in β-BaB2O4 , ” IEEE J. of Quantum Electronics. Vol. QE-22, No. 7, 1013 July (1986 ).
[17] Y. Kaneda and S. Kubota, IEEE J. of Selected Topic in Quantum Electronics., Vol. 3,No. 1, 35, February (1997).
[18] A. ASHKIN, G. D. BOYD, J. M. DZIEDZIC, “ Resonant Optical Second Harmonic Generation and Mixing ,”IEEE J. of Quantum Electronics., Vol. QE-2, 109 (1966).
[19] C.S.Adams and A.I. Ferguson, “ Tunable narrow linewidth ultra-violet light generation by frequency doubling of a ring Ti:sapphire laser using lithium tri-borate in an external enhancement cavity ,”Opt. Commun.,Vol. 90, 89 (1992)
[20] M. BRIEGER, H. BUSENER, A. HESE, F.v.MOERS and A. RENN, “ Enhancement Of Single Frequency SHG In A Passive Ring Resonator ,” Opt. Commun., Vol. 90, December (1992)
[21] M. LEVESQE, N. CYR, M. TETU, ELECTRONICS LETTERS, Vol. 27, No. 24, (1991)
[22] C. Svelto, E. Bava, S. Taccheo and P. Laporta, “ Pound-Drever frequency-stabilised Yb-Er:glass laser against C2H2 molecule at 1.534097μm ,”ELECTRONICS LETTERS, Vol. 34, No. 5, (1998)
[23] Eckhard Zanger, Ralf M ller, Baining Liu, Michael K tteritzsch, “ Diode-pumped cw all solid-state laser at 266 nm ,”Laser Analytical Systems
[24] SIEGMAN, “LASERS”
[25] Amonon Yariv, “ Optical Electronics in Modern Communication”, FIFTH EDITION.
[26] B. E. A. Saleh, M. C. Teich, “ FUNDAMENTALS OF
PHOTONICS ”
[27] Walter Koechner, “Solid-State Laser Engineering”
[28] Frank L. Pedrotti, S.J. Leno, S. Pedrotti, “Itroduction To Optics”
[29] NEW FOCUS, Inc., Catalog Vol. 9, 40, 1998/99
[30] M. de Labachelerie, K. Nakagawa, Y. Awaji, and M. Ohtsu, “ High-frequency-stability laser at 1.5μm using Doppler-free molecular lines ,”Opt. Lett., Vol. 20, No. 6, March (1995)
[31] Franken, P.A., A.E.Hill, C. W. Peters and G. Weinreich, Phys. Rev. Lett. 7, 118(1961)
[32] R.C.ECKARDT, H.MASUDA, Y.X.FAN and R.L.BYER, IEEE J. of Quantum Electronics.,QE-26, 922(1990)
[33] R.S. Adhav, S.R. Adhav, J.M.Pelaprat, Laser Focus/Electro-Optics, 88 September (1987)