Tuhia he tohutoro mō tēnei wāhanga - I te tīmatanga o te tau 1969, i muri tata mai i te whakaekenga a te Soviet o Czechoslovakia
Kua wehe atu a Tauc i te whenua. I muri i te whakapau i etahi marama i te Whare Wananga o Paris ka neke ia me tona whanau ki Bell Labs i Murray Hill, New Jersey, United States, mo te karahipi 12-marama. I noho tonu ia hei kaitohutohu mo te wa roa mo Bell Labs i muri mai. I te Oketopa 1969, i te wa i whakakorehia ai e te Whare Wananga o nga Pūtaiao o Czech tana hararei hararei me te tono kia hoki mai ia, ka paopao a Tauc ka whakaae ki te tuunga o te kaiwhakaako mo te hangarau me te ahupūngao i te Whare Wananga o Brown, Rhode Island, i mahi ia tae noa ki tana reti i te 1992. Na tenei whakatau i whiua ai ia ki te whare herehere i Czechoslovakia i aukati i a ia ki te toro atu ki te whenua mo nga tau tekau ki muri. I te Whare Wananga o Brown, i tuhia e ia he mana mo te tikanga o te tohu i nga kiriata angiangi ma te whakamahi i te spectroscopy photomodulation poto. I tuhia hoki e ia etahi pukapuka, i mahi hei etita mo nga niupepa e toru, a he mema no te United States National Academy of Sciences. Ko ana tohu ko te 1982 Frank Isakson Prize me te 1988 David Adler Lectureship Award o te American Physical Society. I te tau 2003, i muri noa iho i te hinganga o te kawanatanga Communist, i whakawhiwhia ia ki te tohu "De Scientia et Humanitate Optime Meritis", te tohu nui rawa atu mo te kaiputaiao i te Czech Republic.