Q-Switches

Q-switches are intracavity devices used to generate very high peak power, short duration laser pulses. These are typically loss modulators operating on the zero order beam. The goal of a Q-switch is to diffract as much power from the zero order as possible to increase the cavity loss and extinguish the laser output. When the RF drive to the Q-switch is momentarily turned off, the optical power built up in the laser is emitted as a short pulse. The process may be repeated at rates in excess of 100KHz. Depending on the frequency and interaction length, AO Q-switches either operate in the Bragg regime, just like an AOM, with predominately a single diffracted beam or in the Raman-Nath regime with multiple diffracted beams.

Model Cooling Centre Frequency (MHz) Material Active Aperture (mm) Max Power (W) Damage Thresh (MW/cm^2) Driver
Q1072-SF24L Conduction 24 SF10 1.5 5 >300 AQS
Q1058C-SFxxL-H Conduction 24/27 SF10 1.0/1.5 5 >300 AQS
Q1025-TxxL-H Conduction 27/80 TeO2 1 3 >250 AQS
Q1025-SFxxL-H Conduction 41/80 SF10 1 3 >300 AQS
Q1080C-TxxL-H Conduction 41/ 68 / 80 TeO2 1.5 4 >250 AQS
Q1087-aQ80L Conduction 80 Quartz 1 6 >500 AQS
Q1137-SFxxL-H Conduction 41/80 SF57 1.0 / 1.5 6 >300 AQS
Q1162-SFxxL-H Conduction 41/80 SF10 1 6 >300 AQS
Q1119-aQxxL-H Conduction 41/ 80 Quartz 1.0 / 1.5 10 >500 AQS
Q1119-FSxxL-H Conduction 41/ 80 Fused Silica 1.0 / 1.5 10 >500 AQS
Q1133-aQxxL-H Conduction 41/ 68 / 80 Quartz 1.0 to 2.0 10 >500 AQS
Q1133-FSxxL-H Conduction 41/ 68 / 80 Fused Silica 1.0 / 1.5 10 >500 AQS
Q1062-FSxxL-H Water 24/ 27 Fused Silica 1.5 to 6.0 60 >500 AQS
Q1062-FSxxS-H Water 24/ 27 F.Silica (Shear) 1.5 to 5.5 60 >500 AQS
Q1083-FSxxL-H Water 24/ 27 / 41 Fused Silica 1.5 to 6.0 60 >500 AQS
Q1083-FSxxS-H Water 24/ 27 / 41 F.Silica (Shear) 1.5 to 5.5 60 >500 AQS