What synthetic production method gained rapid development due to laser research in the 1960s?

The method of production that experienced rapid development due to advancements in laser research during the 1960s is the pulling method. This technique involves the controlled drawing of a crystal from a molten state, allowing for the growth of single crystals with high purity and quality. The use of lasers in the 1960s contributed to a better understanding of crystal growth dynamics, leading to improved techniques and precision in the pulling method. The ability to create larger and more flawless crystals became significant for various industries, including electronics and gemology.

In contrast, floating zone involves maintaining a molten zone to create a crystal, and while it has its applications, it did not see the same level of rapid development from laser research as the pulling method. Flame fusion, though a popular synthetic method (especially for corundum), relies on the melting of raw materials rather than advancements in laser technology. Flux growth is another method for creating crystals, typically slower and more complicated than pulling, and it didn’t benefit in the same way from laser advances during the mentioned period. Thus, the pulling method stands out as the one that gained substantial progress thanks to the innovations in laser technology.