Polarization beamsplitter with a substrate-mode holographic stru

Details Polarization beamsplitter with a substrate-mode holographic stru Polarization beamsplitter with a substrate-mode holographic stru

1994-02-17

1996-01-23

Shafer, Ricky D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359487, 359488, 359495, 359500, 359569, 359583, 359639, G02B 532, G02B 530, G02B 528, G02B 518

Patent

active

054869340

ABSTRACT:
This polarization beamsplitter with a substrate-mode holographic structure is used to separate the s-polarization beam with p-polarization, and guide two separated beams at directions parallel to each other. The element consists of a pair of substrate-mode gratings with a specific designed diffraction angle and index modulation on a dielectric substrate. Through the input grating the normally incident beam with one polarization has zero diffraction efficiency and directly pass through the substrate; the beam with another polarization is diffracted at an angle exceeding the critical angle, then propagates through the substrate with total internal reflection to the output grating, and normally coupled out of the element. Thus, the beams with two different polarizations are separated, and two beams propagates at direction parallel to each other. The gratings suitable for infrared applications were formed with dichromated gelatin, and recorded by two free-space input beams with shorter wavelength recording technique.

REFERENCES:
patent: 3622220 (1971-11-01), Kogelnik
patent: 4863224 (1989-09-01), Afian et al.
patent: 4946253 (1990-08-01), Kostuck
patent: 4993789 (1991-02-01), Biles et al.
patent: 5085496 (1992-02-01), Yoshida et al.
patent: 5272550 (1993-12-01), Dickson et al.
patent: 5331445 (1994-07-01), Dickson et al.

Affiliated with

Also associated with

Rating

Polarization beamsplitter with a substrate-mode holographic stru does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polarization beamsplitter with a substrate-mode holographic stru, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization beamsplitter with a substrate-mode holographic stru will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1508793