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TOP VIEW
45.00°
4.500"
O
4.247"
A
A
A
A
0.3750" deep
3.439"
0.500" deep
A
D
0.875" deep
A
C
0.125" deep
C
0.750" deep
P(x8)
B(x4)
0.125" deep
1.822"
E
A
A
contact surface
F
D
D
K
A
.860" deep
L
9.737"
I
.190"
.330"
8.368"
5.000"
H
.040"
I
M
3.877"
M
.017"
I
8.780"
FRONT VIEW
.000"
.120"
7.929"
.372"
2.960"
.685"
N
1.273"
.264"
J
.799"
.000"
.000"
N
2.310"
.000"
A
G
A
6.379"
A
1.361"
1.449"
1.537"
1.625"
1.632"
1.799"
1.865"
.626"
A
I
L
.625"
K
N
.880"
1.000"
J
H
N
M
M
I
I
NOTES:
A. 8-32 tapped, threads on both sides. Drill hole through part, and tap
through, or tap at least 0.375" usable thread on each side. (x11)
B. 2-56 clearance through with counterbore to 0.970" deep (leaving 0.030" of
material to bottom of part). (x4)
O. Hole angled 45° with respect to back surface, centered on hole D, and
0.688" below top of piece. All depths measured from top right corner.
First drill through to main cavity Ø 0.345 ± 0.001". Then counterbore Ø
0.500", 1.103" deep relief with flat bottom and Ø 0.625", 1.053" deep
counterbore. Tap as in M.
C. Plunge holes Ø 0.250" at these locations first, before cutting out inner
cavity. See additional note 3.
P. Ø 0.070" hole through part. (Cut after arm has been machined to 0.5"
thick to avoid wandering of drill bit.) (x8)
D. Hole Ø 0.250", 0.625" deep. Details of bottom not important. (x3)
E. Hole Ø 0.250", 0.809" deep. Details of bottom not important.
F. Rectangular cavity 0.450" x 0.250" x 0.655" deep (through holes J), corner
fillets Ø 0.125".
ADDITIONAL NOTES:
G. Hole Ø 0.177" through part.
H. 0.450" x 0.250" rectangular slot (with Ø 0.250" fillets) through to main
cavity (2" deep). In addition, 0.675" x 0.375" rectangular slot (with Ø
0.375" fillets) through to prism pocket (0.25" deep).
I.
8-32 tapped, 0.400" deep. Details of bottom not important.
J.
Rectangular cavity 0.800" x 0.450" x 1.250" deep, corner fillets Ø 0.250".
K. Holes Ø 0.063" through to cavity F (1.43" deep). Predrill 1.25" deep so bit
won't wander. These holes should be made before cavity J is cut. (x5)
L. Drill hole Ø 0.190", 2.0" deep; details of bottom not important. Then ream
Ø 0.250", 0.040" deep, flat bottom. External feature is a 0.33" tall, Ø0.372"
cylinder which has a channel cut using a 1/32" radius milling cutter. This
channel is centered 0.190" from end of feature and has a depth of 0.017".
M. Drill hole for 8-32 loose (Ø 0.185") clearance through to inner cavity.
Then counterbore to Ø 0.332", 1.610" deep, flat bottom. Then counterbore
Ø 0.500", 0.425" deep relief with flat bottom, and Ø 0.625", 0.375" deep
counterbore. Tap hole 3/8-24 so usable threads extend to at least 1"
below outermost surface of part. (x2)
N. 4-40 tapped, at least 0.25" usable thread. (x2)
1. Material is 6061-T6 aluminum. Starting block is 4.5" x 10" x 1".
2. Standard tolerance is 0.005" unless otherwise noted.
3. Cut holes A and B first. Secure part to supporting base using
holes A (to support part) and holes B (to support arm), then cut
main cavity through part, plunging first at locations C.
4. Surfaces marked "contact surface" must be made very flat
(finishing pass with end mill, as little chatter as possible).
5. See attached drawing for selected details (ramp and arm).
6. This extended cavity is very similar to the original, short design.
EXTENDED UNIBODY LITTROW LASER -- MAIN CAVITY
E. COOK, P. MARTIN, D. STECK
3/24/11
10.000"
A
A
6.123"
1.013"
7.176"
7.138"
6.996"
7.034"
6.939"
6.796"
6.853"
6.728"
6.519"
P(x8)
6.433"
.900"
B(x4)
6.642"
6.574"
C(x2)
6.502"
ARM DETAIL
6.270"
RAMP DETAIL
3.302"
3.080"
.800"
3.054"
.450"
.125"
.525"
2.989"
2.941"
2.791"
.860"
1.000"
2.883"
2.734"
2.686"
P(x8)
2.595"
33.69°
2.547"
SIDE CROSS SECTION
2.379"
33.69 degree angle cut made using Ø 0.25"
end mill from above. Use many repeated
CNC passes to make ramp as smooth as
possible.
2.518"
B(x4)
2.408"
(Dimensions measured from lower left hand corner of cavity body)
EXTENDED UNIBODY LITTROW LASER -- DETAIL
E. COOK, P. MARTIN, D. STECK
3/24/11
TOP VIEW
4.500"
4.247"
A
B
A
B
B
B
A
1.200"
B
3.750"
3.439"
C
2.250"
1.200"
1.200"
1.200"
D
2.250"
D
1.200"
B
2.250"
1.200"
C
D
B
B
9.283"
2.467"
B
5.875"
1.822"
B
1.013"
B
0.750"
0.626"
B
B
B
B
C
C
0.253"
FRONT VIEW
B
D
B
D
B
B
D
B
B
C
0.500"
C
A
A
A
NOTES:
A: 8-32 clearance (Ø 0.177") through part with Ø 0.313"
counterbore, 0.164" deep from bottom; for mounting lower
lid to baseplate.
B: Ø 0.313" through part (to clear screws which attach the
lower lid to the main cavity).
C: 1/4-20 clearance (Ø 0.257") through part with Ø 0.438"
counterbore, 0.250" deep.
D: 1.200" x 1.200" square hole (with 5/16" circles on corners to
allow for machining); cut 0.020" deep and centered as
shown. Bottom of channel should be a very flat surface (set
finishing pass to minimize machining marks and tool
chatter).
ADDITIONAL NOTES:
1. Material is 6061-T6 aluminum. Starting block is 4.5" x
11.75" x 1".
2. Standard tolerance is 0.005" unless otherwise noted.
EXTENDED UNIBODY LITTROW LASER -- BASEPLATE
E. COOK, P. MARTIN, D. STECK
3/24/11
11.750"
11.375"
10.612"
9.244"
B
6.998"
4.752"
B
A
5.875"
2.740"
0.375"
0.000"
A
1.139"
A
0.000"
0.080" deep
0.005" deep
TOP VIEW
0.010" deep
4.480"
4.227"
A
A
B
A
B
A
B
.2
50
.5
3.419"
"
00
"
F
1.
A
60
A
0"
D
2.332"
1.802"
A
7.147"
G
2.634"
2.317"
E
6.751"
1.350"
2.729"
A
1.750"
A
A
.993"
A
A
.606"
A
C
A
A
B
B
.080"
.750"
FRONT VIEW
ADDITIONAL NOTES:
NOTES:
1.
Material is 6061-T6 aluminum. Starting block is 4.48" x 10" x 0.75".
A: 8-32 clearance through part (Ø 0.177"), for
mounting lids to main cavity.
2.
Standard tolerance is 0.005" unless otherwise noted.
B: 8-32 tapped through part, for mounting lower
lid to baseplate.
EXTENDED UNIBODY LITTROW LASER -- LOWER LID
E. COOK, P. MARTIN, D. STECK
3/24/11
E: 1.600" x 0.500" x 0.005" deep rectangular hole with
Ø 3/8" fillets, inset with a 1.500" x 0.250" x 0.010"
deep rectangular hole with Ø 1/4" fillets, rotated
45° relative to rest of part, and centered as shown.
Dimensions not critical. (Inset border to be used to
align grating arm.)
C: Ø 0.177" hole through part.
F: 0.115" wide flat-bottom channel, 0.080" deep,
oriented as shown. Channel is for a 3/32" thick, 7"
inner diameter O-ring.
D: 1.750" x 1.350" x 0.080" deep rectangular hole
with Ø 3/8" fillets, and centered as shown.
Dimensions not critical.
G: Ø 7/32" flat-bottom hole, 0.055" deep, for a 1/16"
thick, 5/64" inner diameter O-ring.
10.000"
9.737"
8.368"
5.000"
3.877"
1.865"
1.632"
1.023"
.000"
.264"
B
.000"
6.122"
.233"
TOP VIEW
4.480"
4.227"
A
A
A
A
C
3.419"
A
0.080" deep
1.802"
A
A
A
A
A
.993"
A
A
.606"
A
A
A
.080"
.750"
FRONT VIEW
NOTES:
ADDITIONAL NOTES:
A. 8-32 clearance through part (Ø 0.177"), for
mounting lids to main cavity.
1. Material is 6061-T6
aluminum. Starting block is
4.48" x 10" x 0.75".
B.
EXTENDED UNIBODY LITTROW LASER -- UPPER LID
E. COOK, P. MARTIN, D. STECK
3/24/11
8-32 tapped through part.
C. 0.115" wide flat-bottom channel, 0.080" deep,
oriented as shown. Channel is for a 3/32" thick,
7" inner diameter O-ring.
2. Standard tolerance is 0.005"
unless otherwise noted.
10.000"
9.737"
8.369"
8.136"
6.123"
5.000"
3.877"
1.632"
.000"
.000"
0.020"
A
UNIBODY LITTROW LASER -- DIODE MOUNTING BLOCK
NOTES:
E. COOK, P. MARTIN, D. STECK
4-40 clearance, 0.655" deep; 4-40 tapped
through remaining material, as shown.
8-32 tapped through to hole G.
C:
4-40 clearance, through to hole B (for
venting).
D:
4-40 clearance, through to slot F, with 0.230"
deep counterbore
0.800"
1.400"
4-40 tapped, with maximum thread depth
possible.
B
A
Ø 0.580" +0.005"/-0.000" through.
H:
Ø 0.187" hole, 0.140" deep with flat bottom
(use 3/16" end mill).
I:
Ø 0.094" hole, 0.375" deep; shape of bottom
not critical.
J:
Ø 0.313" section removed from corners as
shown; size and dimension not critical.
J
0.125"
0.375"
Material is 6061-T6 aluminum. Starting block
is 1.40"x0.78"x1.08".
2.
Standard tolerance is 0.005" unless otherwise
noted.
3.
Surfaces labeled "contact surface" should be
made very flat (i.e. cut with a fly cutter then
lap flat).
0.125"
0.177"
0.932"
0.390"
(to center of gap)
0.390"
(to relief center)
FRONT VIEW
0.655"
I
B
C
A
E
J
0.375"
D
F
F
G
RIGHT SIDE VIEW
0.055"
0.230"
D
H
0.780"
contact surface
A
B
1.025"
1.
1.080"
0.250"
B
C
D
G
LEFT SIDE VIEW
I
0.313"
E
G:
H
J
C
Gap is centered vertically; dimension not
critical.
A
ADDITIONAL NOTES:
I
0.600"
F:
TOP VIEW
H
0.625"
B:
E:
2/24/10
B
1.275"
A:
0.539"
0.924"
E
J
J
0.156"
0.469"
TOP VIEW
E
.020"
UNIBODY LITTROW LASER -- ISOLATOR ADAPTER II
A
09/24/10
1.600"
E. COOK, P. MARTIN, D. STECK
B
CC
CC
NOTES:
A. Cavity thru piece, corner fillets Ø 0.250"
.875"
.500"
.020"
D
2.050"
1.800"
1.448"
1.535"
.994"
.452"
.539"
.250"
.000"
SIDE VIEW
D
D
B
.537"
C
B
.875"
C
E
E
F
A
F
B
1.035"
1.112"
B
B
1.329"
1.417"
1.230"
C
contact surface
A
contact surface
D.
8-32 clearance, free fit, to 0.250" deep, then
8-32 tapped through to cavity A.
E.
0.500" wide relief cut, 0.020" deep. On
back of part and centered as shown.
F.
0.750" wide relief cut, 0.020" deep. On
front of part and centered as shown.
I.
OFR body type II isolator, Thorlabs P/N
IO-3D-(wavelength)-VLP
II.
Fiber coupler assembly: tilt plate with FC
connectorized fiber port, Oz Optics
1.600"
1.331"
.994"
.656"
1.750"
.000"
4-40 tapped 0.5" deep (x4, located on
square side length 1" rotated 5 deg
clockwise). Holes not included in side
view for clarity.
PERIPHERALS:
C
III. Fiber coupler assembly to laser head
adapter Oz Optics adapter #15.
ASSEMBLY
IV. 8-32 x 1" ss socket-head cap screw, w/
narrow profile (Ø0.310" OD) washer.
IV
ADDITIONAL NOTES:
0-80
4-40
4-40
8-32
0-80
IV
8-32
4-40
4-40
IV
0-80
IV
IV
I
C.
.800"
.000"
.732"
.000"
B
8-32 clearance, extra loose fit (Ø 0.250"),
with loose counterbore Ø 0.375", 0.875"
deep (screw requires a 0.310" outer
diameter washer for assembly). (x4)
F
B
FRONT VIEW
.352 .333"
.420"
B.
II
III
II
III
1.
Material is 6061-T6 aluminum. Starting
block is 1.75" x 2.05" x 1.60".
2.
Standard tolerance is 0.005" unless
otherwise noted.
IV
3.
I
Surfaces marked "contact surface" must be
made very flat (finishing pass with end
mill, as little chatter as possible, lapped).
A
B
CC
NOTES:
.020"
TOP VIEW
A. Cavity thru piece, corner fillets Ø 0.125"
E
F
B
CC
C. 4-40 tapped through part (x4, located on square side
length 1" rotated 5 deg clockwise). Holes not
included in side view for clarity.
.020"
D
B. 8-32 clearance, extra loose fit (Ø 0.250"), with loose
counterbore Ø 0.375", 0.250" deep (screw requires a
0.310" outer diameter washer for assembly). (x4)
.109"
.352 .333"
.420"
C
C B
B
B
1.329"
1.417"
F
A
B
I. OFR tablet optical isolator, Thorlabs P/N
IO-D-780-VLP
A
B
B
C
F. 0.750" wide relief cut, 0.020" deep. On front of part
and centered as shown.
PERIPHERALS:
E
E
F
1.112"
E. 0.500" wide relief cut, 0.020" deep. On back of part
and centered as shown.
D
.875"
D
.000"
D. 8-32 clearance, free fit, to 0.450" deep, then 8-32
tapped through to cavity A.
.732"
2.050"
1.800"
SIDE VIEW
1.448"
1.535"
.994"
.452"
.539"
.250"
.000"
FRONT VIEW
II. Fiber coupler assembly: tilt plate with FC
connectorized fiber port, Oz Optics P/N
contact surface
contact surface
C
1.750"
III. Fiber coupler assembly to laser head adapter Oz
Optics adapter #15.
IV. 8-32 x 0.375" ss socket-head cap screw, w/ narrow
profile (Ø0.310" OD) washer.
ASSEMBLY
ADDITIONAL NOTES:
IV
I
II
III
II
4-40
4-40
8-32
IV
3. Surfaces marked "contact surface" must be made very
flat (finishing pass with end mill, as little chatter as
possible, lapped).
4-40
4-40
0-80
IV
1. Material is 6061-T6 aluminum. Starting block is 1.75"
x 2.05" x .375".
2. Standard tolerance is 0.005" unless otherwise noted.
8-32
IV
IV
0-80
0-80
IV
III
I
UNIBODY LITTROW LASER -- CAVITY-COUPLER ADAPTER I
E. COOK, P. MARTIN, D. STECK
03/20/10
TOP VIEW
IX
3/
824
A
A
A
A
B
A
A
VI
E
4.500"
V
I
F
II
B
A
A
XI
8-32
B
D
XI
8-32
B
A
A
A
A
A
C
4-40
X
A
III
VII
4-40
X
3/8-24
3/8-24
IX
IX
A
XIII
IX
8-32
8-32
XII
XII
VIII
1.000"
FRONT VIEW
IX
X
IX
VIII
IV
X
VII
10.000"
XIII
PERIPHERALS:
I: Diode collimation tube with optic; Thorlabs P/N LT230P-B.
II: Holographic diffraction grating, lines/mm determined by desired
wavelength. Custom size (12mm x 6mm x 3mm) available through
Newport.
III: AR coated anamorphic prism pair; Thorlabs P/N PS871-B.
IV: Oz Optics pigtailed PM fiber coupler (with hardware).
V: Low-voltage stacked Piezoelectric actuator from Noliac; P/N
SCMA (5 mm x 5 mm x 10 mm; 60 V max voltage; 1000 N blocking
force).
EXTERNAL CAVITY UNIBODY LITTROW
LASER -- ASSEMBLY DRAWING
E. COOK, P. MARTIN, D. STECK
VI: 1/4-100 fine adjustment screw, sleeve diameter
Ø 0.343" ± 0.001"; New Focus P/N 9376-K. Cut hole Ø 0.345" ±
0.001" for tight fit.
VII: D-sub 15 contact female connector, shell size E.
VIII: Built-in 1/4" vacuum seal-off valve (see Cryocomp P/N V1021-1)
to be used with a valve operator (Crycomp P/N V1025-3).
IX: 3/8-24 x 0.5" stainless steel socket-head cap screw, with Ø 3/8" ID
1/16" thick Viton O-ring.
X: 4-40 x 0.25" stainless stell socket-head cap screw.
XI: 8-32 x 0.375" stainless steel socket-head cap screw.
XII: 8-32 x 0.375" stainless steel socket-head cap screw, with narrow
profile (Ø 0.310" OD) washer.
XIII: Optical isolator adapter plate (see additional drawings).
XIV: Viton O-ring, 7" ID 3/32" thick, McMaster P/N 1201T837. Inserted
in grooves on lids.
NOTES:
A: 8-32 tapped holes for mounting lids.
B: Ø 1/4" holes for venting screws.
C: Ø 0.177" hole to pass TEC current wires
to underside of main cavity.
D: Five Ø 0.063" holes to function as wire
feedthroughs.
E: Shelf for laser-head protection circuit
board.
F: 1/8" deep venting channel, which also
functions to run wires to the piezo and
temperature sensors.
4/21/11
LONG UNIBODY LASER -- FULL ASSEMBLY DRAWING
E. COOK, P. MARTIN, D. STECK
4/21/11
IV