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Geomagnetic field influences upward movement of young Chinook salmon emerging from nests

Creator:

Putman, Nathan F., Scanlan, Michelle M., Pollock, Amanda M., O'Neil, Joseph P., Couture, Ryan B., Stoner, Joseph S., Quinn, Thomas P., Lohmann, Kenneth J., and Noakes, David L.

Abstract:

Organisms use a variety of environmental cues to orient their movements in three-dimensional space. Here, we show that the upward movement of young Chinook salmon (Oncorhynchus tshawytscha) emerging from gravel nests is influenced by the geomagnetic field. Fish in the ambient geomagnetic field travelled farther upwards through substrate than did...

Resource Type:

Article
Ultrafast Nonlinear Optical Effects in Semiconductor Quantum Wells Resonantly Driven by Strong Few-Cycle Terahertz Pulses

Creator:

Tomaino, J. L., Jameson, A. D., Lee, Yun-Shik, Prineas, J. P., Steiner, J. T., Kira, M., and Koch, S. W.

Abstract:

Intraexciton transitions in semiconductor quantum wells are modulated by strong and tunable few-cycle terahertz pulses. Time-resolved terahertz-pump and optical-probe measurements demonstrate that the 1s heavy-hole and light-hole exciton resonances undergo large-amplitude spectral modulations when the terahertz radiation is tuned near the 1s–2p intraexciton transition. The strong nonlinear optical transients exhibit...

Resource Type:

Article

Full Text:

, Yun-Shik Lee a,* , J. P. Prineas b , J. T. Steiner c , M. Kira c , and S. W. Koch c a