1. The innovation that met the room temperature challenge was the double heterostructure laser. 2. Aluminium gallium arsenide is used as a barrier material in GaAs based heterostructure devices. 3. Such a design is called a separate confinement heterostructure ( SCH ) laser diode. 4. The second waveguide type is a buried heterostructure . 5. Typical example is a ZnO / ZnMgO heterostructure . 6. Aluminum-free diode heterostructure lasers became the next step in his scientific life. 7. It is often grown on gallium phosphide substrates to form a GaP / GaAsP heterostructure . 8. Geballe was involved in research in the then-upcoming field of multilayered heterostructure materials. 9. The double heterostructure is a very useful structure in optoelectronic devices and has interesting electronic properties. 10. Panish and Izuo Hayashi independently developed first the single heterostructure laser and then the double heterostructure laser.
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