The axicon: a new type of optical element.
A holographic optical element is considered as the imaging device.
(a) Object side coding, where an optical element is attached externally to a conventional lens.
Here, an optical element is placed on, or close to, the image detector (Figure 2(c)).
This optical element is realized using a spatial light modulator (SLM) and an amplitude slide.
Our technique utilizes a novel optical element placed in the pupil plane of an imaging system.
Diffractive optical element (DOE) can be used for beam smoothing.
Besides simply increasing the number of dynamic holographic tweezers, one may use a passive diffractive optical element (DOE) in addition.
What is unconventional is the use of a phase-only reflective SLM as the back optical element of the cavity.
Leger, J. R., Chen, D. & Wang, Z. Diffractive optical element for mode shaping of a Nd YAG laser.
However, as the pigment progresses inward, it cuts off more and more of the image-forming beam until only the central optical element supplies light to the rhabdom (located immediately below the central optical element).
