Study on blue light generation by nonlinear optical crystal KLN

非线性光学晶体KLN产生蓝光的研究

• 批准号: 06452133
• 负责人: SASAKI Takatomo
• 金额: $ 4.03万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452133/
• 关键词: KLN fiber; blue light; nonlinear optics; second harmonics generation; single crystal; uniformity; temperature acceptance; spectral bandwidth

We have employed the micro-prlling down (mu-PD) method in order to overcome the difficulty in growing non-congruently melting KLN crystal of sufficient size and of reasonable umiformity of crystal composition. KLN could be formed as a small diameter fiber (200mum) with high growth rate (6mm/h) by mu-PD method. This system could make possible to grow non-congruently melting crystal with uniform conposition and high quality. Since the much smaller deviation from starting composition of the melt occurring in the growth of thinner fiber crystal, it is possible to maintain a certain composition in the solution during growth and to help in fabrication of uniform crystal in composition. Also, fewer thermal distortions and dislocations were introduced in the thinner fiber crystals. By using these fibers, we have observed blue light by frequency doubling of cw Ti : saphhire laser at RT.We have obtained 0.6mW blue output power from single pass SHG at an input power 700mW of cw Ti : Sapphire laser. The temperature and wavelength acceptances of the KLN fiber were 2.5ﾟC・cm and 0.4mm・cm at room temperature, respectively.

为了克服生长足够尺寸和晶体成分均匀性的非一致熔化KLN晶体的困难，我们采用了微压下（μ PD）方法。通过mu-PD方法可以形成具有高生长速率（6 mm/h）的小直径纤维（200 μ m）。该系统可实现成分均匀、高质量的非全等熔晶体生长。由于在较细纤维晶体的生长中发生的与熔体的起始组成的偏差小得多，因此可以在生长期间在溶液中保持一定的组成，并且有助于制造组成均匀的晶体。此外，在较薄的纤维晶体中引入较少的热畸变和位错。利用这种光纤，在室温下实现了连续钛宝石激光器的倍频，在连续钛宝石激光器输入功率为700 mW时，获得了0.6mW的单次倍频蓝光输出。在室温下，KLN光纤的温度接受度为2.5 μ C·cm，波长接受度为0.4mm·cm。

项目成果

Yusuke Mori: "Generation of blue light by using KLN crystal" Technical digest of compact blue-green lasers. 1. 52-54 (1994)

Yusuke Mori：“使用 KLN 晶体产生蓝光”紧凑型蓝绿激光器技术摘要。

Yusuke Mori, Takatomo Sakaki, Takahiro Obana, Masashi Yoshimura, Norio Ohnishi, Tsuguo Fukuda: "Growth of KLN fiber crystals and its application for blue-violet light generation" Optical Review. 1. 241-242 (1994)

Yusuke Mori、Takatomo Sakaki、Takahiro Obana、Masashi Yoshimura、Norio Ohnishi、Ttsuguo Fukuda：“KLN 纤维晶体的生长及其在蓝紫光产生中的应用”光学评论。

Yusuke Mori: "Growth of KLN fibers and its application for blue-violet light generation" Optical Review. 1. 241-242 (1994)

Yusuke Mori：“KLN 纤维的生长及其在蓝紫光产生中的应用”光学评论。

Yusuke Mori: "Grouth of KLN Fiber Crystals and Application for Blue-Viold Ligth Generation" Optical Revien. 1. 241-242 (1994)

Yusuke Mori：“KLN 纤维晶体的生长及其在蓝紫光产生中的应用”Optical Revien。

Takatomo Sasaki: "Generation of blue light by using potassium lithium niobate crystal" Nonlinear Optics. 14. 291-299 (1995)

Takatomo Sasaki：“使用铌酸钾锂晶体产生蓝光”非线性光学。