{"product_id":"coherent-light-matter-interactions-in-monolayer-transition-metal-dichalcogenides-von-edbert-jarvis-sie","title":"Coherent Light-Matter Interactions in Monolayer Transition-Metal Dichalcogenides","description":"This thesis presents optical methods to split the energy levels of electronic valleys in transition-metal dichalcogenides (TMDs) by means of coherent light-matter interactions. The electronic valleys found in monolayer TMDs such as MoS2, WS2, and WSe2 are among the many novel properties exhibited by semiconductors when thinned down to a few atomic layers, and have have been proposed as a new way to carry information in next generation devices (so-called valleytronics). These valleys are, however, normally locked in the same energy level, which limits their potential use for applications. The author describes experiments performed with a pump-probe technique using transient absorption spectroscopy on MoS2 and WS2. It is demonstrated that hybridizing the electronic valleys with light allows one to optically tune their energy levels in a controllable valley-selective manner. In particular, by using off-resonance circularly polarized light at small detuning, one can tune the energy level of one valley through the optical Stark effect. Also presented within are observations, at larger detuning, of a separate contribution from the so-called Bloch--Siegert effect, a delicate phenomenon that has eluded direct observation in solids. The two effects obey opposite selection rules, enabling one to separate the two effects at two different valleys.\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783319887999\"\u003e\u003ch3\u003e\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783319887999","offer_id":39419794751581,"sku":"9783319887999","price":106.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/a48b7811-6869-4baf-a709-a84faad007a3.jpg?v=1775192591","url":"https:\/\/shop.autorenwelt.de\/products\/coherent-light-matter-interactions-in-monolayer-transition-metal-dichalcogenides-von-edbert-jarvis-sie","provider":"Autorenwelt Shop","version":"1.0","type":"link"}