Abstract
Recently, there has been a growing effort towards building very compact photonic devices for atomic spectroscopy in the field and in space [1]. Phase modulators are central building blocks of these devices. They are required for frequency modulation spectroscopy applications as well as for ultra-fast phase control in optical phase-locked loops. Integration of phase modulators into hybrid laser and spectroscopy modules allows for very compact and robust systems. The unique integration properties of III-V compound semiconductors with existing electronics make the realization of AlGaAs/GaAs double heterostructure phase modulators very attractive [2].
© 2015 IEEE
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