YAG Laser Focusing Lenses Specifications
OPTICAL COMPONENTS
YAG Laser Focusing Lenses
Spherical Lenses
Cylindrical Lenses
•
•
•
•
•
•
Lens Kits
Air-spaced design
Standard focal lengths from 20 to 150mm
High damage, narrowband, high performance Anti-Reflection coatings
Barrel mounted for ease of use
Optional protective windows available
Matched focal lengths for YAG and HeNe wavelengths
Achromatic Doublets
Multi-Element
Micro Optics
Mirrors
Prisms
Substrates & Windows
Beamsplitters
Polarizers
Filter & Apertures
These YAG lenses range in focal length from 20 to 150mm. They consist of either two
or three air-spaced glass elements mounted in a metal cell. The lenses all have a 30mm
clear aperture but they are recommended for use with beams not exceeding one inch in
diameter. Two different designs are used - the 20, 30, 40, and 50mm focal length lenses
have three elements, but the 60, 80, 100, and 150mm lenses use simpler two element
designs. These lenses are Anti-Reflection coated with a high damage Narrowband
Multilayer Anti-Reflection coating optimized to give less than 0.5% reflectance per surface
at 1064nm.
These lenses are chromatically corrected so that a HeNe guide beam or a visible range
video monitor beam will be in focus at the same position as the YAG beam.
Spot size or beam waist is inversely proportional to the numerical aperture at the effective
beam diameter. The spot size given in the table is for a full aperture beam. Let us know
your imaging requirements and we will be pleased to advise you on the appropriate lens
for your application.
Since these lenses are often used with high power lasers we offer optional protective
windows which can be attached to the focusing side of the lens. In the event of
inadvertent back reflection of high energy beams into the lens it is likely that the window
will absorb the incident energy and shatter preventing further damage to the lens itself.
Protective windows are offered uncoated in packages of ten pieces. For optimum
performance we advise that the protective windows be Anti-Reflection coated with our
A46 V Coat at 1064nm.
We use the term
YAG laser loosely
to include
Nd:Glass,
Nd:YAG, YLF
and other types
of laser operating
in the wavelength
region of
1.06 microns.
ORDERING
&
TECHNICAL SUPPORT
(949) 851-5881
FAX (949) 851-5058
E-MAIL
Specifications & Tolerances
sales@optosigma.com
Focal length: ±2% @1064nm
Coating: %R<0.5 at 1064nm
Laser damage threshold: Measured at 8J/cm2 10ns pulse
Clear aperture: >90%
www.optosigma.com
WEB
97
OPTICAL COMPONENTS
Part No.
Spherical Lenses
027-0210
027-0220
027-0230
027-0240
027-0250
027-0260
027-0270
027-0280
Cylindrical Lenses
Lens Kits
Achromatic Doublets
Multi-Element
Micro Optics
Mirrors
A
6.0
6.5
4.0
3.5
4.0
4.0
4.0
4.0
B
32
36
36
36
36
36
36
36
Dimensions (mm)
C
D
E
M29/P0.75 20.0 M22/P0.75
M34/P0.75 27.0 M28/P0.75
M34/P0.75 26.5 M28/P0.75
M34/P0.75 27.0 M28/P0.75
M34/P0.75 27.0 M34/P0.75
M34/P0.75 27.0 M34/P0.75
M34/P0.75 27.0 M34/P0.75
M34/P0.75 27.0 M34/P0.75
Prisms
L
22
22
19
19
17
15
14
12
WD
L
A
4.0mm
Substrates & Windows
Beamsplitters
Polarizers
B
Filter & Apertures
C
E
D
YAG LASER FOCUSING LENS
YAG Laser Focusing Lenses
Focal
Length
(mm)
Working
Distance, WD
(mm)
N.A. Spot Size
(µm)
Cell
Length, L (mm)
Protective
Window
Thread, T
Lens
Composition
20.0
30.0
40.0
50.0
9.0
19.1
30.9
41.4
0.48
0.39
0.30
0.24
1.15
1.76
2.27
2.79
22.0
22.0
19.0
19.0
M22 x P0.75
M28 x P0.75
M28 x P0.75
M28 x P0.75
Triplet
Triplet
Triplet
Triplet
027-0210 027-0220 027-0230 027-0240 59.9
79.9
100.1
149.3
41.1
67.6
88.4
140.0
0.20
0.15
0.12
0.08
3.32
4.38
5.46
8.15
17.0
15.0
14.0
12.0
M34 x P0.75
M34 x P0.75
M34 x P0.75
M34 x P0.75
Doublet
Doublet
Doublet
Doublet
027-0250 027-0260 027-0270 027-0280 YAG Lens
Protective Windows
Exit Window
(mm)
ORDERING
&
TECHNICAL SUPPORT
(949) 851-5881
FAX (949) 851-5058
E-MAIL
sales@optosigma.com
For Use
With
WINDOW
Price
10 Piece
Package
PART
NUMBER
Price
PART
NUMBER
RETAINER
Price
PART
NUMBER
21.0
27.0
27.0
27.0
027-0210
027-0220
027-0230
027-0240
027-0189
027-0191
027-0191
027-0191
027-0194
027-0195
027-0195
027-0195
33.0
33.0
33.0
33.0
027-0250
027-0260
027-0270
027-0280
027-0192
027-0192
027-0192
027-0192
027-0196
027-0196
027-0196
027-0196
WEB
www.optosigma.com
For optimum performance request your protective windows with our A46 Anti-Reflection
V Coat at 1064nm.
98
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