Rubuta ci gaba don wannan sakin layi - A farkon 1969, ba da daɗewa ba bayan mamayewar Soviet na Czechoslovakia
, Tauc ya bar kasar. Bayan ya kwashe 'yan watanni a Jami'ar Paris sai ya koma tare da danginsa zuwa Bell Labs a Murray Hill, New Jersey, Amurka, don samun tallafin watanni 12. Ya kasance mai ba da shawara na dogon lokaci ga Bell Labs bayan haka. A watan Oktoba 1969, lokacin da Cibiyar Kimiyya ta Czech ta soke hutun hutunsa kuma ta nemi dawowarsa, Tauc ya ƙi kuma ya karɓi matsayin farfesa na injiniya da kimiyyar lissafi a Jami'ar Brown, Rhode Island, wanda ya riƙe har zuwa lokacin da ya yi ritaya a 1992. Saboda wannan shawarar ya sami hukuncin ɗaurin kurkuku a Czechoslovakia wanda ya hana shi ziyartar ƙasar shekaru da yawa a nan gaba. A Jami'ar Brown, ya kasance marubucin takardar izini don hanyar da za a kwatanta fina-finai masu laushi ta amfani da spectroscopy na photomodulation na wucin gadi. Ya kuma rubuta littattafai da yawa, ya yi aiki a matsayin editan mujallu uku, kuma ya kasance memba na Kwalejin Kimiyya ta Kasa ta Amurka. Kyaututtukansa sun haɗa da Kyautar Frank Isakson ta 1982 da kuma Kyautar David Adler Lectureship ta 1988 na American Physical Society. A shekara ta 2003, bayan faduwar mulkin kwaminisanci, ya sami lambar yabo ta "De Scientia et Humanitate Optime Meritis", lambar yabo mafi girma ga masanin kimiyya a Jamhuriyar Czech.