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LBO – Nonlinear crystal
LBO (LiB3O5) crystal is first picked among other non-linear crystals used to produce high power second and third harmonic laser light. Large band gap and transparency region, high non-linear coupling, good chemical and mechanical properties make this crystal capable of optical parametric processes (OPO/OPA) and noncritical phase matching (NCPM), too.
Features:
- Broad transparency range from 160nm to 2.6µm
- High optical homogeneity
- Relatively large effective SHG coefficient (about three times that of KDP)
- 554nm–2.6µm phase matching range for Type I SHG
- 790nm–2.15µm phase matching range for Type II SHG
- Small angular SHG walk-off at room temperature, no NCPM walk-off at 149 °C
- Wide acceptance angle
Comparison of bulk damage threshold (@1064nm, 1.3 ns)
|
Crystal |
Energy fluence (J/cm²) |
Power density (GW/cm²) |
|
KTP |
6.0 |
4.6 |
|
KDP |
10.9 |
8.4 |
|
BBO |
12.9 |
9.9 |
|
LBO |
24.6 |
18.9 |
Applications:
- Either Type I or Type II frequency doubling (SHG) and sum frequency generation (SFG) of high peak power Neodymiun-doped , Ti:Sapphire, Alexandrite and Cr:LiSAF lasers
- Temperature-controllable non-critical phase matching (NCPM) for 1.0–1.3µm
- Room temperature NCPM for Type II SHG at 0.8–1.1µm
- Widely tunable OPO/OPA for both Type I and Type II phase matching
Application notes:
- Available coatings
- Multi-layer dielectric laser line, dual-band or broad-band AR coatings
- Single-layer protective coatings (P-coating)
- Brewster cut
- LBO crystals with one or both Brewster cut ends for high-power applications are available upon request. Such configuration minimizes Fresnel losses without a reduction of surface damage threshold.
Recommended LBO crystal length (mm)
|
Application (T = 300 K) \ Pulse duration, fs |
10 |
50 |
100 |
150 |
300 |
|
SHG @ 1030 nm, Type I, Ɵ=90°, Φ=13.6° |
0.1 |
0.9 |
1.8 |
2.8 |
5.6 |
Typical Items
|
LBO crystals for Nd:YAG lasers |
|
|
|
|
|
|
3x3 |
10 |
42.2/90 |
1064+532/355 |
THG @ 1064 nm, Type II |
4-LBO-3310-0 |
|
|
|
90/11.6 |
1064+532/1064+532 |
SHG @ 1064 nm, Type I |
4-LBO-3310-1 |
|
3x3 |
15 |
42.2/90 |
1064+532/355 |
THG @ 1064 nm, Type II |
4-LBO-3315-0 |
|
|
|
90/11.6 |
1064+532/1064+532 |
SHG @ 1064 nm, Type I |
4-LBO-3315-1 |
|
3x3 |
15 |
90/0 |
1064+532/1064+532 |
NCPM SHG @ 1064 nm, T=150° C |
4-LBO-3315-2 |
|
|
20 |
90/0 |
1064+532/1064+532 |
NCPM SHG @ 1064 nm, T=150° C |
4-LBO-3320-0 |
|
5x5 |
15 |
42.2/90 |
1064+532/355 |
THG @ 1064 nm, Type II |
4-LBO-5515-0 |
|
|
|
90/11.6 |
1064+532/1064+532 |
SHG @ 1064 nm, Type I |
4-LBO-5515-1 |
|
LBO crystals for Yb:KGW/KYW lasers |
|
|
|
|
|
|
6x6 |
0.9 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0609-2 |
|
|
1.9 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0619-2 |
|
|
2.8 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0628-2 |
|
|
3.7 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0637-2 |
|
8x8 |
0.9 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0809-2 |
|
|
1.9 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0819-2 |
|
|
2.8 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0828-2 |
|
|
3.7 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-0837-2 |
|
10x10 |
0.9 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-1009-2 |
|
|
1.9 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-1019-2 |
|
|
2.8 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-1028-2 |
|
|
3.7 |
90/13.8 |
515+1030/515+1030 |
SHG @ 1030 nm, Type I |
4-LBO-1037-2 |
