Del Mar Photonics supplies the Q-switches made from DKDP crystals and MgO:LiNbO3 or LiNbO3 crystals used in the Q-switches.
Our DKDP Q-switches has been well proved in the medical, industrial and military applications, the whole Q-switch with electronic driving system is available and the lowest capacitance of 5pF is available. 
Our MgO:LN and LN crystals for Q-switches is chosen through the strict procedure, the extinction ratio of 500:1 is available.
1) Specifications of LiNbO3 and MgO:LiNbO3 crystals for Q-switches request a quote
Size: 9x9x25mm or 4x4x15mm (Other customized size is available);
Accuracy of orientation: Z-axis: <+/-5';  X-axis and Y-axis: <+/-10';
Parallelism: <15";
Finish: 10/5 S/D;
Flatness: Lambda/10 @ 633nm;
Perpendicularity: 10';
AR-coating (Z-faces): AR @ 1064nm;
Electrodes (X-faces): Gold/Chrome plated on X-faces;
Wavefront distortion: <Lambda/4 @ 633nm;
Extinction ratio: LN>500:1, MgO:LN: 250:1;
Working Voltage Range: 1900V-2400V;
Working Temperature Range: -40 ~ 60 degree

2) Features and specifications of DKDP Q-switches  request a quote
稩ndustry-proven performance 
稨ighest (99.8 KD*P) deuteration levels in industry 
稟dhesive/Epoxy-free assembly 
稟pertures from 8mm diameter up to 20mm diameter 
稬owest absorption in industry 
稥conomical upgrade/rebuild program 
稨ighest optical damage thresholds 
稟ccessible technical support 
稴tandard performance documentation 
稯ne-year limited warranty 
稵@1064nm: 98+/-1
稩CR: 2000:1;
稸CR: 1500:1;
稬ambda/4 voltage: 3400V+/-50V;
稢apacitance: <30pF (<5pF is available);
Lithium Niobate Q-switches - Lithium Tantalate Q-switches
Passive Q-switches for 1.5 - 2.0 micron range

Del Mar Photonics, Inc.
4119 Twilight Ridge
San Diego, CA 92130
tel: (858) 876-3133
fax: (858) 630-2376
Skype: delmarphotonics