Nonlinear Crystal - LiB3O5 (LBO)
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China
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On FindLight:
since 2018
Description
LBO (Lithium Triborate - LiB3O5) is now the most popularly used material for Second Harmonic Generation (SHG) of 1064nm high power lasers (as a substitute to KTP) and Sum Frequency Generation (SFG) of 1064nm laser source to achieve UV light at 355nm.
Nonlinear Crystal - LiB3O5 (LBO)
Specifications |
|
|---|---|
| Crystal Type: | LBO (Lithium Triborate) |
| Phase Mathcing Type: | Not Applicable |
| Mounting: | Mounted |
| Width: | 5 mm |
| Height: | 5 mm |
| Length: | 8 mm |
| Flatness: | <= Lambda/4 |
| Surface Quality (Scratch-Dig): | 20-10 |
| AR Coating: | Both Sides |
Features
Broad transparency range from 160nm to 2600nm.
High damage threshold.
Applications
• A quite high overall conversion efficiency and 540-1030nm tunable wavelength range were obtained with OPO pumped at 355nm.
• Type I OPA pumped at 355nm with the pump-to-signal energy conversion efficiency of 30% has been reported.
• Type II NCPM OPO pumped by a XeCl excimer laser at 308nm has achieved 16.5% conversion efficiency, and moderate tunable wavelength ranges can be obtained with different pumping sources and temperature tuning.
• By using the NCPM technique, type I OPA pumped by the SHG of a Nd:YAG laser at 532nm was also observed to cover a wide tunable range from 750nm to 1800nm by temperature tuning from 106.5℃ to 148.5℃.
• By using type II NCPM LBO as an optical parametric generator (OPG) and type I critical phase-matched BBO as an OPA, a narrow linewidth (0.15nm) and high pump-to-signal energy conversion efficiency (32.7%) were obtained when it is pumped by a 4.8mJ, 30ps laser at 354.7nm. Wavelength tuning range from 482.6nm to 415.9nm was covered either by increasing the temperature of LBO or by rotating BBO.
Frequently Asked Questions
LBO (Lithium Triborate - LiB3O5) is a crystal material used for Second Harmonic Generation (SHG) of 1064nm high power lasers and Sum Frequency Generation (SFG) of 1064nm laser source to achieve UV light at 355nm.
LBO has a broad transparency range from 160nm to 2600nm, high optical homogeneity, high damage threshold, wide acceptance angle and small walk-off, and is phase matchable in a wide wavelength range.
LBO can be used for OPO and OPA pumping, achieving a high overall conversion efficiency and tunable wavelength range. It can also be used for optical parametric generation and critical phase-matched BBO as an OPA, achieving a narrow linewidth and high pump-to-signal energy conversion efficiency.
The thermal expansion coefficients of LBO are αx=10.8x10-5/K, αy=-8.8x10-5/K, and αz=3.4x10-5/K.
The damage threshold of LBO is greater than 10 GW/cm2 for 1064nm, TEM00, 10ns, 10HZ (polished only), greater than 1 GW/cm2 for 1064nm, TEM00, 10ns, 10HZ (AR-coated), and greater than 0.5 GW/cm2 for 532nm, TEM00, 10ns, 10HZ (AR-coated).