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1064-1070nm : Thermal Lensing Compensation(TLC) Optics

TLC Optics logo

The TLC (Thermal Lensing Compensation) patent US 8,274,743 B2 optic design passively compensates thermal lensing for high power collimators and focusing lenses. Through the use of special optical materials and optic design, thermal lensing for lasers with powers in excess of 1KW is reduced to less than the Rayleigh range of the lens design. Figure 1 TLC Optics™ uses focusing objectives.

The Haas Laser Technologies TLC Optics™ incorporate a balancing of the dn/dT between two high power laser optical materials, the thicknesses, air spacing and curvatures to minimize the thermal lensing between 20°C and 250°C using a proprietary optical design merit function. This means your application will be in focus from the moment the laser is first turned on to when it is turned off.

Thermal management of the lens mechanics is about the only means to mitigate thermal lensing but as optical glass, in general, is not a great thermal conductor there can be large temperature gradients across the lens that impacts its performance that even thermal management cannot handle. This means that most high power fiber laser applications require several minutes for the optical system to thermally stabilize before the shift in focus stays within the lasers focusing lens Rayleigh range(depth of focus).

Thermal Lensing Compensation TLC Optics Fig 2aThermal Lensing Compensation TLC Optics fig 2b

Figure 2a & 2b shows a simple fused silica best form singlet with an overlay of the same lens that has a 230°C temperature gradient applied. The blue rays are light focused at ambient temperature and the green rays represent the focus at the elevated temperature.

 

Thermal Lensing Compensation TLC Optics fig 3Figure 3 shows the close up the Haas TLC Optics™ in figure 1 with the same focal length and temperature gradient.

 

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Below is a list of TLC Optics. Please call (973) 598-1150 for pricing and availability.
Haas Part Number C.A. Series Description
TLCT-27034-050-1064/532/355 25mm 50mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-060-1064/532/355 25mm 60mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-080-1064/532/355 25mm 80mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-100-1064/532/355 25mm 100mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCYD-27034-120-1064/532/355 25mm 120mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCYD-27034-150-1064/532/355 25mm 150mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-050-900-1080 25mm 50mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-060-900-1080 25mm 60mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-080-900-1080 25mm 80mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-100-900-1080 25mm 100mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-120-900-1080 25mm 120mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCT-27034-150-900-1080 25mm 150mm F.L. x 27.0mm clear aperture TLC Optic Set
TLCYD-50047-120-1070 50mm 120mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-160-1070 50mm 160mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-180-1070 50mm 180mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-200-1070 50mm 200mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-250-1070 50mm 250mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-300-1070 50mm 300mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-500-1070 50mm 500mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 120mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 160mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 180mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 200mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 250mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 300mm F.L. x 47.0mm clear aperture TLC Optic Set
TLCYD-50047-120-900-1080 50mm 500mm F.L. x 47.0mm clear aperture TLC Optic Set
     

 


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