How to decrease fringe spacing in a laser diffraction setup

[fa08ti]

I want to know what kind of manipulations can be done to decrease the distance between fringes. the activity is done with a laser.

I am basing my conclusions on this equation

delta x= (L)(lambda)/d

here's what i am thinking,

decreasing the wavelengths will decrease the distance between the fringes.
increasing the distance between the slits will also decrease the distance between the fringes.

is there anything else that would decrease the distance between the fringes?

 

[PeterO]

I want to know what kind of manipulations can be done to decrease the distance between fringes. the activity is done with a laser.

I am basing my conclusions on this equation

delta x= (L)(lambda)/d

here's what i am thinking,

decreasing the wavelengths will decrease the distance between the fringes.
increasing the distance between the slits will also decrease the distance between the fringes.

is there anything else that would decrease the distance between the fringes?

If you are measuring the distance between the fringes in angular separation, that is probably it, but if you are casting the fringe pattern onto a screen ... the L in you formula perhaps ?