Finally I made a two colors hologram using Blue Nichia Laser + HeNe.
The result is very encouraging although lack of green laser gives a gloomy feeling.
As soon as I find the time I will sensitize the emulsion for green laser too so I will try my very first experiment with color holography.
Notes:
First picture is the color checker chart, printed on paper and glued on glass sheet.
The second picture is the hologram of the color checker chart.
Holoplate: homemade
Blue power density: 50uW/cm^2
Red power density : 100uW/cm^2
Exposure : 15 seconds
![Image](http://digilander.libero.it/crispers/colorchecker.jpg)
![Image](http://digilander.libero.it/crispers/redbluehologram.jpg)