Figure 3
From: Dielectric Optical-Controllable Magnifying Lens by Nonlinear Negative Refraction
Experimental 2D images formed by the magnifying lens in a non-collinear configuration.
a, The non-collinear experimental setup:The pump and probe beams have the pulse duration of ~75 fs and repetition rate of 1 KHz. A delay line is added in the light path of the pump beam to ensure overlapping in time with the probe beam. A USAF resolution card, used as the “object”, is placed on the probe’s path, while the “image” formed with 4 WM beams can be captured by a color CCD camera. The focal length of the plano-concave lens is −13.5 cm and its edge thickness is 1 mm. b, Magnified images of the “numbers” in the USAF resolution card recorded at u = 3.25 cm, v = 15 cm in a non-collinear experimental setup. The corresponding original object images are shown in the insets. The scale bar is 500 μm.
