Cesium lithium borate
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CsLiB6O10 (Cesium lithium borate, CLBO) is a non-linear crystal for UV applications and generates the 4th and 5th harmonics of the fundamental laser wavelength (1064 nm).
Properties
- Transparency range : 180 nm - 2750 nm
- Symmetry : tetragonal, point group 4m2
- Cell parameters : a = 10.494, c = 8.939 Å
- Mohs hardness : 4
- Refractive indexes:
- *at 1064 nm : no= 1.4852; ne = 1.4353
- *at 532 nm : no = 1.4985; ne = 1.4462
- *Sellmeier equations (Range:of 400 - 2400 nm ; Ref: Proc. SPIE , 4453, 106 (2001))
- *:[n_o^2=2.2145+\frac-0.01413\lambda^2]
- *:[n_e^2=2.0588+\frac-0.00607\lambda^2]
- Non-linear coefficient at 1064 nm : d36 = 0.86 pm/V
- Optical damage threshold : 25 GW/cm2 (1064 nm; 1.1 ns pulses)
- Walk off:
- *at 532 nm : 1.83°
- *at 488 nm : 0.98°
- Cut off SHG : 471 nm
- Chemical properties : slightly hygroscopic
Nonlinear Optical Properties of CLBO
| Harmonics wavelength (nm) | Phase-matching angle (°) | Calculated deff (pm/V) | Walk-off angle (°) | Angular bandwidth (mrad·cm) | Spectral bandwidth (nm·cm) | Temperature bandwidth (°C·cm) |
|---|---|---|---|---|---|---|
| 266 | 61.6 | 0.84 | 1.83 | 0.49 | 0.13 | 8.3 |
| 213 | 67.3 | 0.87 | 1.69 | 0.42 | 0.16 | 5.1 |
Y. Mori, Y. K. Yap, M. Inagaki, S. Nakajima, A. Taguchi, W. L. Zhou, and T. Sasaki, in Advanced Solid-State Lasers, Vol. 1 of Topics in Optics and Photonics (OSA, Washington, D.C., 1996), p. 341.
Applications
- generation highest harmonics (SHG, THG, 4HG, 5HG) of laser radiation
- generation second, third lasers harmonics on the alexandrite, Ti:sapphire laser
Further reading
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