· large nonlinear optical coefficient
· wide angular bandwidth and small walk-off angle
· broad temperature and spectral bandwidth
· high electro-optic coefficient and low dielectric constant
· large figure of merit
· nonhydroscopic, chemically and mechanically stable
Structural and Physical Properties:
Orthorhombic, space group Pna21,point group mm2
a=6.404Å , b=10.616Å , c=12.814Å , Z=8
Nonlinear Optical Properties:
Phase matchable SHG range:
Nonlinear optical coefficients:
d31=6.5pm/v, d32=5pm/v, d33=13.7pm/v,d24=7.6pm/v,d15=6.1pm/v
deff(II)» (d24 - d15)sin2f sin2q - (d15sin2q + d24cos2f)sinq
For type II SHG of a Nd:YAG:
laser at 1064nm:
PM angle: q =90° , f =23.5°
Effective SHG coefficient: deff» 8.3xd36(KDP)
Angular acceptance: 20 mrad-cm
Temperature acceptance: 25° C-cm
Spectral acceptance: 5.6 Å -cm
Walk-off angle: 4.5 mrad (0.26° )
Optical damage threshold: > 450MW/cm2, (@ 1064nm, 10ns, 10Hz)
Low frequency (pm/V)
High frequency (pm/V)
( l in m m)
dnx/dT=1.1x10-5/° C, dny/dT=1.3x10-5/° C, dnz/dT=1.6x10-5/° C
a < 1% cm-1 @1064nm and 532nm
· frequency doubling (SHG) of Nd-doped lasers for green/red output.
· frequency mixing (SFM) of Nd laser and diode laser for blue output.
· parametric sources (OPG, OPA and OPO) for 600nm-4500nm tunable output.
· E-O modulators, optical switches, directional couplers.
· optical waveguides for integrated NLO and E-O devices
NEWPHOTONS provide 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 with:
Standard size of 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 crystal for DPSS application;
strict quality control on optical Standard homogeneity, transmission and scattering
unbeatable price and quantity discount
free technical support
AR-coating, mounting and re-polishing service
mass Production to Support Industrial and Commercial Applications;
Applications for SHG and SFG of Nd:lasers :
手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 is the most commonly used material for frequency doubling of Nd:YAG lasers and other Nd-doped lasers, particularly at the low or medium power density. To date, extra- and intra-cavity frequency doubled Nd:lasers using 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 have become a preferred source of pumping visible dye lasers and tunable Ti:Sapphire lasers as well as their amplifiers. Applied to diode-pumped Nd:laser, 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 has provided the basis for the construction of compact visible solid state laser systems.
Application for OPG, OPA and OPO:
As an efficient OPO crystal pumped by a Nd:laser and its second harmonics, 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 plays an important role for parametric sources for tunable output from visible (600nm) to mid-IR (4500nm), referring to Fig. 1 and Fig. 2.
手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值's OPO results in stable, continuous outputs of femtosecond pulse of 108 Hz repetition rate and miliwatt average power levels in both signal and idler output. 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值's OPO pumped by a 1064nm Nd:YAG laser has generated above 66% efficiency for degenerately converting to 2120nm.
The recently developed new application is the non-critical phase-matched (NCPM) 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 OPO/OPA pumped by the tunable lasers such as Ti:Sapphire, Alexandrite and Cr:LiSrAlF6 (see right figure). The NCPM 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 OPO keeps the 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 crystal fixed in X-axis and tunes the pumping wavelength. If a tunable Ti:Sapphire laser is used as a pumping source (0.7 mm to 1 mm), the output can cover the wavelength range from 1.04mm to 1.45 mm (signal) and from 2.15 mm to 3.2 mm (idler). Due to the favorable NLO properties of NCPM 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值, as high as 45% conversion efficiency was obtained with narrow output bandwidth and good beam quality.
Application for E-O Devices:
In addition to unique NLO features, 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 also has promising E-O and dielectric properties that are comparable to LiNbO3These advantaged properties make 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 extremely useful to various E-O devices. Table 1 is a comparison of 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 with other E-O modulator materials commonly used:
Table 1. Electro-Optic Modulator Materials
When these properties are combined with high damage threshold, wide optical bandwidth (>15GHZ), thermal and mechanical stability and low loss, 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 can be expected to replace a considerable volume of LiNbO3 crystals as E-O modulators.
Applications for Optical Waveguides:
Based on the ion-exchange process on 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 substrate, low loss optical waveguides developed for 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 have created novel applications of integrated optics.
Recently, type II SHG conversion efficiency of 20%/W/cm2 was achieved by balanced phase matching, in which the phase mismatch from one was balanced against a phase mismatch of opposite sign from a second section. Furthermore, segmented 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 waveguides have been applied to type I quasi-phase-matchable SHG of 760-960mm for tunable Ti:Sapphire laser and directly doubled diode laser for 400-430nm output. Conversion efficiency in excess of 100%/W/cm2 have been obtained.
NEWPHOTONS Warranty on 手机博雅德州扑克充值-博雅德州扑克-博雅德州扑克充值 Specifications:
• Transmitting wavefront distortion: less than l /4 @ 633 nm
• Dimension tolerance: (W ± 0.1 mm) x (H ± 0.1 mm) x (L + 0.2 mm/-0.1mm)
• Clear aperture: > 90% central area
• Flatness: l /8 @ 633 nm
• Scratch/Dig code: 10/5 to MIL-O-13830A
• Parallelism: better than 20 arc seconds
• Perpendicularity: 5 arc minutes
• Angle tolerance: D q < ± 0.5° , D f < ± 0.5°
• AR coating: R< 0.2% at 1064nm and R<1.0% at 532 nm.
• Quality Warranty Period: one year under proper use.
AR Coating: AR@1064nm&532nm; HR Coating: HR@1064nm&HT@532nm