J S Hartman

Quantitative surface topography determination by Nomarski reflection microscopy. 2: Microscope modification, calibration, and planar sample experiments.

R. Gordon, J. Hartman, J S Hartman, 1980, Applied optics.

Nomarski differential interference contrast microscopy for surface slope measurements: an examination of techniques.

R. Gordon, J. Hartman, J S Hartman, 1981, Applied optics.

High-resolution (Doppler-limited) spectroscopy using quantum-cascade distributed-feedback lasers.

A. Cho, D. Sivco, C. Gmachl, 1998, Optics letters.

Kilohertz linewidth from frequency-stabilized mid-infrared quantum cascade lasers.

J. L. Hall, F. Capasso, A. Cho, 1999, Optics letters.