Development of Tunable Squeezed-light Source and Its Application to Spectroscopy

可调谐压缩光源的研制及其在光谱学中的应用

• 批准号: 08459001
• 负责人: EDAMATSU Keiichi
• 金额: $ 6.02万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08459001/
• 关键词: Quantum optics; Nonlinear optics; Squeezed light; Squeezing; Optical parametric oscillation; second harmonic generation; Laser; Quantum dot; 非線型光学; 光パラメトリック発振

We generate amplitude squeezed light tunable around 430nm using a frequency-doubling ring cavity with a KNbO_3 crystal. The cavity is pumped by a single-frequency Ti : sapphire laser, which is pumped by a frequency-doubled all solid-state Nd : YVO_4 laser. The degree of squeezing is O.2dB at 20MHz with second harmonic (fundamental) power of 95mW (300mW). The observed degree of squeezing is consistent with theoretical calculation applicable to our cavity, but smaller than a previously reported value. We also study the optical properties of CuCI and ZnCdSe quantum dots, for future application to solid-state spectroscopy with squeezed or nonclassical light.

我们利用KNbO_3晶体的倍频环形腔产生了在430 nm附近可调谐的幅度压缩光。该腔由单频钛宝石激光器泵浦，由倍频全固态Nd：YVO4激光器泵浦。在基波功率为95 mW(300 MW)、频率为20 MHz时，压缩程度为0.2分贝。观察到的压缩程度与适用于我们腔的理论计算是一致的，但小于先前报道的值。我们还研究了CuCi和ZnCdSe量子点的光学性质，为将来应用于压缩光或非经典光的固态光谱奠定了基础。

项目成果

B.P.Zhang: "Spontaneous formation and photoluminescence of ZnSe dot arrays" Appl.Phys.Lett.71. 3370-3372 (1997)

B.P.Zhang：“ZnSe 点阵列的自发形成和光致发光”Appl.Phys.Lett.71。

B.P.Zhang: "A new approach to Zn Cd Se quantum dots" Mat.Sci.Eng.B. 51. 127-131 (1998)

B.P.Zhang：“Zn Cd Se 量子点的新方法”Mat.Sci.Eng.B。

K.Edamatsu, N.Ph.Georgiades, E.S.Polzik, H.J.Kimble, and A.S.Parkins: "Two-photon excitation of three-level atoms in a squeezed vacuum." Prog.Crystal Growth and Charact. 33. 335-338 (1996)

K.Edamatsu、N.Ph.Georgiades、E.S.Polzik、H.J.Kimble 和 A.S.Parkins：“压缩真空中三能级原子的双光子激发”。

B.P.Zhang, T.Yasuda, W.X.Wang, Y.Segawa, K.Edamatsu, and T.Itoh: "A new approach to ZnCdSe quantum dots." Mat.Sci.Eng.B. 51. 127-131 (1998)

B.P.Zhang、T.Yasuda、W.X.Wang、Y.Sekawa、K.Edamatsu 和 T.Itoh：“ZnCdSe 量子点的新方法。”

B.P.Zhang: "Self formation and photoluminescence of II-VI quantum wires or GaAs (100) surfaces" Nonlinear Optics. 18. 133-136 (1997)

B.P.Zhang：“II-VI量子线或GaAs（100）表面的自形成和光致发光”非线性光学。