用提拉法生长了Cr,Yb:YAG晶体,研究了在室温的吸收光谱特性以及氧化性气氛退火对其吸收特性的影响.在室温吸收光谱中存在着五大吸收带:在440nm和605nm存在着Cr3+离子的两个吸收带,而且退火使其发生了明显的"红移";在937nm和968nm处存在Yb3+离子的两个吸收带,能与InGaAs激光二极管(LD)有效耦合,适合激光二极管泵浦;而且在1.03μm处有一Cr4+离子的吸收峰,可用作可饱和吸收体,从而可以实现对Yb3+的自调Q激光输出.在氧化性气氛下退火对晶体吸收特性及缺陷的影响是:退火使晶体的缺陷明显减少而且使Cr4+浓度得到进一步的增加;Cr4+离子浓度的增加主要是由于二价阳离子Ca2+进入相应的Y3+晶格所造成.并且从晶格场的角度讨论了退火使Cr3+离子的吸收带发生"红移"的原因.
参考文献
| [1] | Morris J A;Pollock C R .Passive Q Switching of a Diode-pumped and Nd∶YAG Laser with A Saturable Absorber[J].OPTICS LETTERS,1990,15:440. |
| [2] | Beach R;Davin J;Mitchell S et al.Passive Q-switched Transverse-diode-pumped Nd3+:YLF Laser Oscillator[J].Optics Letters,1992,17:124. |
| [3] | Y.Gui;G.Yao;T,Ji;Y.Gu,X,Lo L.Zhang.In Digest of Conference on lasers and Electro-Optics[M].Optics Society of America,Washington,D.C,1984:166. |
| [4] | Danilov A A;Evstigneev V L;ll'ichev N N et al.Compact GSGG:Cr3+:Nd3+Laser with Passive Q Switching[J].Soviet Journal of Quantum Electronics,1978,17(05):573. |
| [5] | Demchuk M I;Minkov V P;Zhavoronkov N I et al.Chromium-doped Forsterite as a Solid-state Saturable Absorber[J].Optics Letters,1992,17(13):929. |
| [6] | Stokowski S.E.;Randles M.H. .Growth and characterization of large Nd,Cr:GSGG crystals for high-average-power slab lasers[J].IEEE Journal of Quantum Electronics: A Publication of the IEEE Quantum Electronics and Applications Society,1988(6):934-948. |
| [7] | Petricevic V;Gayen S K;Alfano R R .Laser Action in Chromium-actived Forsterite for Near-infrared Excitation.Is Cr the Lasing IonAppl[J].Physics Letters,1998,53(26):2590. |
| [8] | Zhou S;Lee K K;Chen Y C .Self-stabilized Single-longitudinal-mode Operation in a Self-Q-switched Cr,Nd∶YAG Laser[J].Optics Letters,1993,18(17):1418. |
| [9] | Kolbas R.M.;Anderson N.G. .Strained-layer InGaAs-GaAs-AlGaAs photopumped and current injection lasers[J].IEEE Journal of Quantum Electronics: A Publication of the IEEE Quantum Electronics and Applications Society,1988(8):1605-1613. |
| [10] | Pour D P;Gilbert D B;Fabian K B et al.Low Degration Rate in Strained InGaAs/AlGaAs Single Quantum Well Lasers[J].IEEE Photonics Technology Letters,1990,2(02):173. |
| [11] | Payre S A;Krupke W F .A Glimpse into the Laser Crystal Ball[J].Optics and Photonics News,1996,7(08):31. |
| [12] | 陆学友.激光基质钇铝石的发展[M].北京:科学出版社,1972 |
| [13] | Reinburg A;R Riseurg L A;Brown R M et al.GaAs:Si LED Pumped Yb-Doped YAG Laser[J].Applied Physics Letters,1971,19(01):11. |
| [14] | 张克从;张乐潓.晶体生长科学与技术[M].北京:科学出版社,1997 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%