Active thermal emission: Planck spectroscopy and ultrafast pulse generation

Yuzhe Xiao

doi:10.1117/12.2594362

1 August 2021 Active thermal emission: Planck spectroscopy and ultrafast pulse generation

Yuzhe Xiao

Proceedings Volume 11796, Active Photonic Platforms XIII; 1179626 (2021) https://doi.org/10.1117/12.2594362
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

Active control of thermal emission can be realized by modulating either the temperature or the thermal emissivity of an object. This talk will first introduce a new spectroscopic technique—Planck spectroscopy—that measures the spectral emissivity of an object by changing its temperature. Planck spectroscopy uses only a temperature-controlled stage and a detector, without any wavelength-selective components such as prisms, gratings, or interferometers. Then, this talk will describe our efforts to achieve ultrafast control of thermal emission via emissivity modulation. By using free-career dynamics in semiconductors, we generated thermal pulses on nanosecond and picosecond scales.

Conference Presentation

Citation Download Citation

Yuzhe Xiao "Active thermal emission: Planck spectroscopy and ultrafast pulse generation", Proc. SPIE 11796, Active Photonic Platforms XIII, 1179626 (1 August 2021); https://doi.org/10.1117/12.2594362

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