http://digitalcommons.usu.edu/spacegrant/1998/Session2/1/

http://www.ncbi.nlm.nih.gov/pubmed/18286116

http://iopscience.iop.org/1742-6596/122/1/012018/

http://marketplace.idexop.com/store/IdexCustom/PartDetails?pvId=34851

yes, if you can deposit a thin layer of silver or gold metal on a glass substrat. you have to tune your thikness to adjust the beam splitting. (20nm for 50% splitting)

what wavelength? what ratio? whats the use?

please provide some information for an effective solution....

You must find out how to silver a mirror.  A chemical method may be easiest for you.  Then just do it partially to get a half-silvered mirror.

@Ran,

I am mainly interested in the work with the visible light, for example, sometimes implement some holography model. But, if I want to extend this problem to the IR then I will meet a real problem, so I want to know how this problem can be solved also in IR.

For IR I think that quartz substrat instead glass can be a solution. You can use also chromium instead silver for seek of adhesion

Vladimir

i still do not fully understand the purpose of your experiment. but there are sevral simple options the can be implemented immediately:

plate (or wedge plate), will provide other ratio than 50:50

D-shaped mirror / any other mirror edge. divides the intensity, not field-based. will cause some diffraction.

use a the reflection of ND filter.

will that work for you?

In our earlier experiments in holography we had to use for beam splitting wide flat-parallel plates - it isn't 50/50 but as usual you have to have more powerful beam in the object planes, and you can use attenuation filters to compensate energy difference.