Русский
Deutsch
Español
Français
LN E-O Q-Switch
Large nonlinear optical coefficient
Large receiving angle
Small walk-off angle
Wide temperature and spectral bandwidth
High photoelectric coefficient and low dielectric constant
Non-absorbent, stable chemical and mechanical properties
Lowest loss Pockels cells with TOP quality LN (LiNbO3) crystals developed in-house
High quality surface polishing and coating
MgO doped LN and PPLN is available
Long and proven lifetime, 2 years guarantee
20 year experience servicing the most demanding laser applications
KDP, KD*P, KTP, RTP, BBO, and LN are grown by WISOPTIC in-house
Being purchased and trusted by dozens of laser companies worldwide
LiNbO3 (Lithium Niobate, LN) crystal is a multifunctional material that integrates properties of piezoelectric, ferroelectric, pyroelectric, nonlinear, electro-optical, photoelastic, etc. LiNbO3 has good thermal stability and chemical stability.
Among the EO crystals, LN and DKDP are the two primary material that have been practical. DKDP crystals can be easily grown with a high optical homogeneity, which can satisfy the requirement of a large caliber Pockels cell. However, DKDP is water soluble and must be carefully protected from moisture, which complicates its fabrication and application. Additionally, the refractive index-matching fluid will disable DKDP Pockels cell at low temperature. However, a well-known requirement for Pockels cell is to operate in a wide temperature range, especially for military applications. Fortunately, LN crystals are nonhygroscopic, and they possess a low absorption coefficient and insert loss. In addition, they can operate stably in a wide temperature range, which makes LN crystals the main EO crystal applied in military applications.
LN electro-optic Q-switches are widely used in Er:YAG, Ho:YAG, Tm:YAG lasers, and are suitable for low-power Q-switched output, especially in laser ranging. We offer the most compact Q-switches for our customers.
LN Pockels cells can be very compact, and the half-wave voltage can be very low. By doping MgO in LiNbO3, the damage threshold of LN Pockels cells can been increased dramatically.
Dimensions | (2×2~9×9)×25 mm | |
Dimension Tolerance | ± 0.1 mm | |
Angle Tolerance | ± 0.5° | |
Flatness | < λ/8 @ 632.8 nm | |
Surface Quality | < 20/10 [S/D] | |
Parallelism | < 20” | |
Perpendicularity | ≤ 5' | |
Chamfer | ≤ 0.2mm @ 45° | |
Transmitted Wavefront Distortion | < λ/4 @ 632.8 nm | |
Capacitance | 20 pF | |
Electrodes | Gold | |
λ/4 Voltage | ~1.5 kV (@ 1064 nm) | |
Dynamic Extinction Ratio | 20 dB (@ 1064 nm) | |
Clear Aperture | 8.5 mm (> 90% central area) | |
Coating | AR coating: R < 0.2% @ 1064 nm, R < 0.5% @ 532 nm | |
Laser Damage Threshold | LN | 100 MW/cm2 @ 10ns, 10Hz, 1064nm |
MgO : LN | 150 MW/cm2 @ 10ns, 10Hz, 1064nm | |
