The output characteristics of Ti:Sapphire laser pumped by dense plasma light

고밀도 플라즈마 광에 의한 Ti:SAPPHIRE 레이저의 동작

  • Published : 1999.04.01

Abstract

A Ti:Sapphire laser pumped by the HCP has been designed and fabricated to study the optimal pumping conditions for lasing. The fluorescence energy converter LD-490 has been used. The result showed that the threshold energy of Ti:Sapphire laser is 1.39 KJ and the best efficiency is $7.13{\times}10^{-3}$% at the concentration $1.0{times}10^{-3}$ Mol/l of LD-490 dye. However, the efficiencies were decreased with the decrease of dye concentrations. The maximum output energy was obtained at 50 Torr Ar pressure, when the input voltage was 15 kV. As a convert dye, BBQ, was added to LD-490 with the rate of 1:1, the output energy was increased, whereas the thereshold energy was decreased as 1.17 kJ.

실험실에서 제작한 HCP와 IPS를 이용하여 Ti:Sapphire 레이저를 발진시키고 그 특성을 조사하였다. 레이저의 문지방 에너지 1.39kJ로 나타났다. 레이저 효율은 LD-490의 농도 10$\times$10-3Mol/l일 때 가장 높은 효율을 나타내었으며, LD-490의 농도가 낮으면 효율도 감소하는 것으로 나타났다. 레이저의 출력은 5.42 kJ의 입력 에너지에 대해 287mJ이었다. Ar의 방출대와 일치하는 BBQ(bis[2-butyloctyl)oxy]quatephenyl)를 LD-490과 1:1로 혼합하여 에너지 전환제로 사용한 결과 측정한 전구간에 걸쳐 출력 에너지가 증가하였고 문지방 에너지가 LD-490만을 사용할 때 보다 0.22 kJ이 낮아진 1.17 kJ이었다.

Keywords

References

  1. IEEE v.QE-24 Ti-Al₂O₃- A new solid state tunable laser P. F. Moulton
  2. IEEE v.QE-24 Single-frequency Ti: $AL_2O_3$ ring laser P. A. Schulz
  3. J. Appl. Phys. v.55 High power blue-green laser by hypocyclidal-pinch plasmas K. S. Han;S. H. Nam;J. H. Lee
  4. J. Appl. Phys. v.60 A spectrum converter dye for enhancement of blue-green laser efficiency K. S. Han;C. H. Oh;J. H. Lee
  5. J. Appl. Phys. v.60 A spectrum converter dye for enhancement of blue-green laser efficiency K. S. Han; C. H. Oh; J. H. Lee
  6. Appl. Opt. v.19 Ultraviolet laser excitation source J. H. Lee;D. R. McFarland and Hohl
  7. IEEE v.QE-21 Growth spectroscopy, and lasing of Titanium-Doped sapphire laser P. Lacovara;L. Esterowitz
  8. New Phys. v.31 Electrodyanmic behavior of plasma focus device, PFIPS Y. S. Choi;B. H. Shin;C. S. Park;D. K. Park;Y. K. Sohn
  9. IEEE v.QE-21 Analysis of vibronic transition in titanium doped sapphire using the temperature of the fluorescence spectra C. E. Bybik;A. M. Buouncristiani
  10. Comparative study of plasma light sorce for pumping titanium sapphire laser S. H. Hong
  11. New Phycs. v.33 Reduction of the laser threshold threshold energy by the mixed dye method C.H Oh;Y.S. Choi; W. C. Sub; S.J. Park