bids are invited for 1 inch mirror with kinematic mount - to make the beam alignment in the desired direction , 2 inch mirror with kinematic mount - to make the expanded beam alignment in the desired direction , beam splitter 50 50 1 inch - to split the beam into two different directions , polarizing beam splitter - split the beam into two different directions with polarization state , kinematic prism mount - to hold the beam splitter at a proper height , clamping arm - to adjust the position of the beam splitter at the mount , half-wave plate with mount - to change the polarization (phase difference of pi) , quarter-wave plate with mount - to change the polarization (phase difference of pi/2) , rotation mount - to rotate the fast axis of the wave plates. , spherical lens f15 mm, 0.5 inch - to converge the beam at 15 mm , spherical lens f150 mm, 1 inch - to converge the beam at 150 mm , mount with retaining ring 0.5 inch - to mount the smaller spherical lens at the optical post , mount with retaining ring 1 inch - to mount the larger spherical lens at the optical post , cylindrical lens f24.88 mm, l22 mm, h20 mm - to expand the beam up to 2 cm , cylindrical lens f200 mm, l90 mm, h100 mm - to expand the beam up to 5 cm. , fixed cylindrical lens mount, 40.6 mm - to mount the smaller cylindrical lens at the optical post. , fixed cylindrical lens mount 100 mm - to mount the larger cylindrical lens at the optical post. , optical post 75 mm - to hold the optical instruments at a particular location on the optical table at a 75 mm height. , optical post 150 mm - to hold the optical instruments at a particular location on the optical table at a 150 mm height. , post holder 75 mm - to mount the optical post on the table at a 75 mm height. , post holder 150 mm - to mount the optical post on the table at a 150 mm height. , pedestal base adapter - to adapt the post holder to the clamping fork. , clamping fork - to fix and tighten the post holder at a certain location of the tab