L12004-2209H-C Datasheet, PDF (7/8 Pages) Hamamatsu Corporation – Quantum Cascade Laser

ILens / Lens Unit
Aspheric ZnSe Lens for QCL. It can be installed into an Aspheric ZnSe Lens Unit A11331-0xH, and can be mounted onto HHL Mount A11709 series
and Pulsed QCL Driver C11635.
GAspheric ZnSe Lens A11331-0x
* When using the lens by itself, a lens
holder is required.
Parameter
Symbol
A11331-01
A11331-02
Unit
Primary design wavelength λ
8
5
µm
Numerical aperture (NA) NA
0.78
—
Effective diameter
CA
10
mm
Actual focal distance
EFL
4.8
mm
Working distance
WD
3.0
mm
Periphery
OD
14.9 to 15.0
mm
Center thickness
CT
6.4 ± 0.2
6.3 ± 0.2
mm
Edge thickness
ET
3
mm
Material
—
ZnSe
—
Refractive index
n
2.417 at 8 µm
2.429 at 5 µm
—
AR coating
— BBAR, T (ave)>97 % ^(*1) BBAR, T (ave)>96 % ^(*2) —
Weight
—
5
g
(*1) T (ave): Average transmittance at wavelength 8 µm to 12 µm
(*2) T (ave): Average transmittance at wavelength 4 µm to 8 µm
Features
ET
WD CT
A11331-01
BBAR / 8 µm to 12 µm
100
90
80
70
60
50
4
6
8 10 12 14
Wavelength (µm)
A11331-02
BBAR / 4 µm to 8 µm
100
90
80
70
60
50
2
4
6
8 10 12
Wavelength (µm)
GAspheric ZnSe Lens Unit A11331-0xH
Lens mounting unit
XYZ translator
Parameter
Applicable lens
X/Y movable range
Value
A11331-01 or A11331-02
±1 mm
x in the suffix of the part number indicates the type of embedded lens.
Dimensional outline (unit: mm)
15
20.35
7
O-Ring
Usage example
A11331-0xH can be mounted on HHL mount A11709 series and pulsed
QCL driver C11635.
Laser
2- 1.3
WD
1.035"–40
Mounted on A11709-01 Mounted on A11709-02 Mounted on C11635
30
4- 6.01
16
Locking set screws
30
2-M 2 . 6