This Mantra is particularly related to the 4-armed Shadakshari method of Avalokiteśvara. The Dalai Lama is said to generally be an incarnation of Avalokiteshvara, and Therefore the mantra is very revered by his devotees. The mantras are drawn from the Vairocanābhisaṃbodhi Sūtra. The mantra for every deity name in Japanese, https://www.instagram.com/tantramantraaurvigyaan/