Optical bistability using the large nonlinear index at the band gap of semiconductors has been demonstrated in InSb and GaAs.1,2 We present here bistability in InAs at a wavelength of 3μm, which lies between that of the other reported semiconductors. The 3-μm line of the HF laser was used which closely matches the band gap at 77 K. We also will report on experiments in progress to observe bistability at room temperature with the DF laser.

© 1984 Optical Society of America

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