Configure Your Own Autotracker III
If you have a desired tuning range and would like to configure your own system, you can use this flow chart as a guide to chart your way through the subsequent tables. If you want to skip directly to standard crystals and their tuning ranges, simply select: BBO, KDP, or LNB. Otherwise, proceed with configuration.

Step 1. Choose the Model Type of the basic AT-III

Autotrackers
Model Description Notes
AT-III-UV Harmonic Generation System for generation of UV light by doubling dye or OPO or by mixing System includes FR-f and ND filters and set of adjustable legs. Specify vertical or horizontal polarization.
AT-III-IR Harmonic Generation System for generation of IR light by difference frequency mixing of dye or OPO, generally with Nd:YAG System includes FR-f and ND filters and set of adjustable legs. Specify vertical or horizontal polarization.
AT-XIR Retrofit kit to add IR mixing capability to the AT-III-UV System includes IR beamsplitter, IR photodiode, IR lens, IR power supply, and IR ND filter set.
AT-XUV Retrofit Kit to add UV doubling and mixing capability to the AT-III-IR System includes UV beamsplitter, UV photodiode, UV lens, and UV ND filter set.

Step 2. Determine Crystal and Compensator Requirements. Use the standard crystal orientations (BBO Single Crystals, KDP/KD*P Single Crystals, LiNbO3 Single Crystals) to select the crystal and crystal orientation.

Autotracker III Crystal Cell
and Compensator Block Matching
Crystal Application Crystal Cell* Compensator
Block
BBO 6 or 6.5 mm Second Harmonic Generation 561-044 CB-4S6
Third Harmonic Generation
Sum Frequency Mixing		 561-044 CB-4T6
BBO 8 mm Second Harmonic Generation 561-044 CB-4S8
Third Harmonic Generation
Sum Frequency Mixing		 561-044 CB-4T8
BBO 10 mm Second Harmonic Generation 561-044 CB-4T10
Third Harmonic Generation
Sum Frequency Mixing
KDP or KD*P 30 mm
KD*P "M1"		 Second Harmonic Generation 563-1117/UV CB-1
Near UV Sum Frequency Generation
KDP "M2" and "M3" Deep UV Frequency Generation 563-1117/UV CB-3
30 mm long LiNbO3 Difference Frequency Mixing 563-1117/IR CB-5
* see Standard Crystal Cells

Step 3. Use the following table to determine the filters that are needed.

Autotracker III Filter Selection
Output (nm) Reflective Filter In-Line Reflective Filter Color Filter
198-220 FR-4 FR-4L .
217-235 FR-2 FR-2L .
235-270 FR-1 FR-1L .
270-310 FR-f . FC-1
310-340 FR-f . FC-2
340-350 FR-f . FC-2 (2 each)
350-410 FR-f . FC-3 + FC-5
410-470 FR-f . FC-3 + FC-7
233-300 FR-TSTHG FR-TSTHGL .
350-470 FR-TSSHG FR-TSTHGL .
265-325 FR-5 FR-5L .
1200 – 4000 FR-f . FC-6 (2 each)
1800 – 4000 FR-f . FC-8 (2 each)

Step 4. Use the following table to select an approach to harmonic separation.
Harmonic Separators
Model Description Application Description
752-104 UV Harmonic Separator Separates UV from visible and IR Four prism filter, enclosed in housing with adjustable legs. Accepts horizontal polarization for UV wavelength to be separated.
752-105/12S IR Separator for DFM of 1064 nm and 720-880 nm
® ( 2.23 µm – 5.0 µm )		 Separates long wavelength generated from mixing Nd:YAG and dye Combination of dielectric filters and silicon or germanium plates, enclosed in housing with adjustable legs. Accepts horizontal polarization for IR wavelength to be separated.
752-105/13S IR Separator for DFM of 1.064 and 590-720 nm
® ( 1.32 µm – 2.23 µm )
752-105/14S IR Separator for DFM of 1064 nm and 564-615 nm
® ( 1.20 µm – 1.45 µm )
752-105/42S IR Separator for DFM of 532 nm and 720-880 nm
® ( 1.35 µm – 2.03µm ) 		Separates long wavelength generated when mixing doubled Nd:YAG and dye
752-105/43S IR Separator for DFM of 532 nm and 590-720 nm
® ( 2.03 µm – 5.00 µm )
752-105/idler IR Separator for DFM of 1.064 and 1450-1800 nm
® ( 2.60 µm – 4.00 µm )		 Separates long wavelength when mixing Nd:YAG and OPO idler
BH-2013 Harmonic Reflector, R @ 340-375 nm,
T @ 500-580 nm & 1064 nm		 Separates 340-375 nm, typically used when mixing ND:YAG and OPO signal as alternate to doubling degeneracy. Four reflectors needed for optimum separation. Use Inrad A-6380 mounts to hold reflectors. No enclosure.
BH-2014 Harmonic Reflector, R @ 650-770 nm,
T @ 1300-1440 nm		 Separates visible from IR, typically used when doubling OPO idler Four reflectors needed for optimum separation. Use Inrad A-6380 mounts to hold reflectors. No enclosure.

Step 5. Use the following table to select the correct set of adjustable height legs and, if desired, an optional adjustable platform or an extra photodiode.

Accessories
Model Description Notes
AHL-1 Adjustable Height Legs
6.31"-7.50" height range of AT-III beam height		 Standard included with AT-III
AHL-2 Adjustable Height Legs
6.81"-8.00" height range of AT-III beam height		 Optional set, included with AT-III
A-1001-1 Adjustable Height Platform
7.0"-8.2" height range of AT-III beam height		 Option
A-1001-2 Adjustable Height Platform
8.0"-10.1" height range of AT-III beam height		 Option
DPD-UV Dual Photodiode Assembly for AT-III-UV For replacement
DPD-IR Dual Photodiode Assembly for AT-III-IR For replacement

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