Stress induced birefringence of glass-to-metal bonded components
Stress induced birefringence of glass-to-metal bonded components
复制标题
玻璃-金属粘合部件的应力引起的双折射
DOI：
10.1117/12.2574219
复制
发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Hann S
中科院分区：
文献类型：
--
作者：
Hann S
我们报告的应力引起的双折射的10毫米BK 7立方体结合到15毫米× 15毫米× 5毫米的铝试样，使用超短脉冲激光焊接，氢氧化物催化粘接，和光学粘合剂，使用标准的方法在工业中使用。据观察，超短脉冲激光焊接导致在10 mm立方体的85%光学孔径内的低水平的应力诱导双折射。这些级别适用于摄影和显微镜应用，如相关ISO标准所定义的光学许用应力诱导双折射限值。氢氧化物催化粘合显示接近并可能超过该极限，然而，必须注意的是，氢氧化物催化样品的粘合面积大大超过焊接和粘合剂粘合样品的粘合面积20倍，因此可能会经历来自金属表面上的缺陷的更大的机械应力。在玻璃-金属界面的0.5 - 1 mm范围内，发现在玻璃-金属界面的玻璃-金属氢氧化物催化和超短脉冲激光焊接的样品具有显着增加的延迟在该区域直接以上的粘结表面相比，粘结的样品。这种延迟作为与键合界面的距离的函数而迅速衰减。在超短脉冲激光焊接样品的情况下，焊接参数的优化已被证明可以控制界面区域内的延迟水平，从而减少焊接对体光学器件的整体影响。
We report on the stress induced birefringence of 10 mm BK7 cubes bonded to 15 mm x 15 mm x 5 mm aluminium coupons using ultrashort pulse laser welding, hydroxide catalysis bonding, and an optical adhesive using a standard approach used in industry. It was observed that ultrashort pulse laser welding results in a low level of stress induced birefringence within an 85% optical aperture of the 10 mm cube. These levels are suitable for use in photography and microscopy applications as defined by the relevant ISO standard for permissible stress induced birefringence limits in optics. Hydroxide catalysis bonding was shown to approach and possibly exceed this limit, however, it must be noted that the bonding area of the hydroxide catalysis samples greatly exceeds that of the welding and adhesive bonded samples by a factor of 20 and thus will likely experience grater mechanical stress from defects on the metal surface. The induced stress in the adhesively bonded samples was found to be well-confined, with the retardation falling below the maximum acceptable limits for microscopy type applications of 10 nm/cm retardation within 0.5 - 1 mm of the glass-metal interface for the majority of samples tested. The hydroxide catalysis and ultrashort pulse laser welded samples have a significant increase in retardation in the region directly above the bonded surface compared to the adhesively bonded samples. This retardation decays rapidly as a function of distance from the bonded interface. In the case of ultrashort pulse laser welded samples, optimisation of the welding parameters has been shown to control the level of retardation within the interface region, thus reducing the overall effect of the weld on the bulk optic.
登录
查看更多内容
UltraWELD：焊接玻璃和金属的新方法
DOI：
--
发表时间：
2019
期刊：
影响因子：
--
作者：
R. Carter
通讯作者：
R. Carter
DOI：
--
发表时间：
2007
期刊：
SPIE Optical Engineering + Applications
影响因子：
--
作者：
K. Prabhu;T. Schmitz;P. Ifju;J. G. Daly
通讯作者：
J. G. Daly
影响因子：
1.9
作者：
Carter, Richard M.;Troughton, Michael;Hand, Duncan P.
通讯作者：
Hand, Duncan P.
避免在皮秒激光玻璃与玻璃焊接过程中对预先存在的光学接触的要求。
影响因子：
3.8
作者：
Jianyong Chen;R. Carter;R. Thomson;D. Hand
通讯作者：
D. Hand