Special Crystal Mount for high power applications

In nonlinear optical conversion processes where high power laser sources are involved. It is essential to avoid the use of glue or double sticky tape. Also, the use of glue and sticky tape means that you can not easily take out the crystals for cleaning or repolishing. On the other hand, without glue or double sticky tape, the mounting of nonlinear optical crystals still has to be very secure and stable and, at the same time, protect the crystal from chipping or cracking.

The special crystal mount presented here addresses such concerns.  

Features

• Clear annodize that minimizes blast under intense laser power

• Compression spring design that provides restraint yet steady holding force on the crystal

• Stable mounting direction that minimize the movement of crystal in the sensitive direction

• Indexed version provide resettable angular precision down to 5micron radian

• All OPO/OPGs pumped at 355nm/532nm, ns/ps. (e.g. CASIX BBO-3B I or BBO-3B II OPOs)
• All ns/ps pulsed dye lasers working in the visible/near IR region.

• The basic structure of the BSHG-UV is the counter rotating crystal stage. This crystal stage could host 2 BBO crystals at the same time.
• CASIX offer 3 BBO crystals, cut at different angles, to cover the UV range from 205nm to 440nm. These 3 BBO crystals are: Short-UV(205nm to 225nm, cut at 77║ЦC), Medium-UV (220nm to 290nm, cut at 55║ЦC)  and Long-UV (280nm to 450nm, cut at 35║ЦC). These crystals are specially chosen and are the best combination to cover the widest UV range possible with the minimum cost. One could pick up either two of them to selectively cover the UV range of interest. Or one could use just one crystal at a time to lower cost, in this case a UV fused silica compensation block is recommended to compensate for the optical displacement.
• The Polarization Rotation Prism pair could rotate the horizontally polarized input into a vertically polarized input (required).
• A 4 Pellin-Brocca Prism pair or a rotaing single piece Pellin Proca Prism assembly separates the UV from the fundamental, at the same time, keeps the beam position and beam pointing direction fixed.

• The basic structure of the BMIX-UV is the rotating crystal stage. This crystal stage could host 2 BBO crystals at the same time.
• CASIX offer 2 BBO crystals, cut at different angles, to cover the UV range from 189nm to 230nm. The first BBO crystal (Medium UV) will double the 460nm to 550nm input to UV covering 230nm to 290nm, one could spare this crystal if 230nm to 290nm UV is already available from other doublers. The second BBO crystal (Deep UV, cut at 55║ЦC, will mix the 230nm to 290nm with the 1064nm, to generates 189nm to 227nm.
• The Polarization Rotation Prism + dichroic mirror could control the polarizations of the UV/Visible and 1064nm input such that 1064nm and UV input become vertically polarized, while the Visible input becomes horizontally polarized. The output will be horizontally polarized.
• The 4 Pellin-Brocca Prism pair separates the UV from the fundamental, at the same time, keeps the beam position and beam pointing direction fixed.