Hologram Lasers
GH5R495A3C
❇ Optical Characteristics of Hologram Device (Design Standard*)
(TC=25˚C)
Parameter
Hologram diffraction
efficiency
Symbol
Conditions
MIN.
TYP.
82
MAX.
Unit
0 th
-
-
-
-
-
-
77
6
-
%
%
˚
λ=780nm
±1st
7
9
D1,D2
Except D1,D2
-
21.1
26.4
9
-
Hologram diffraction
angle
λ=780nm
-
-
12.4
-
˚
Grating diffraction efficiency
Grating diffraction angle
0:1
6.7
-
-
λ=780nm
2.8
˚
❇ Electro-optical Characteristics of Laser Diode (Design Standard*)
(TC=25˚C)
Parameter
Symbol
∆x
Conditions
MIN.
-80
TYP.
MAX.
+80
Unit
µm
µm
µm
-
-
-
−
∆y
Misalignment position
-80
+80
∆z
-80
+80
❇
Electro-optical Characteristics of OPIC for Signal Detection (Design Standard*)
(TC=25˚C, VCC=5V, Vref=2.1V)
❇3
Segment
Parameter
Supply voltage
Symbol
VCC
Vref
Iref
Conditions
MIN.
4.5
TYP.
5
MAX.
Unit
V
−
−
5.5
Reference voltage
2.00
-0.5
45
2.1
1
2.21
V
Reference voltage terminal current
Common to high/ low gain, No light
Common to high/ low gain, -3dB
Common to high/ low gain, -3dB
Common to high/ low gain
f=0.1 to 45MHz
2
-
mA
MHz
MHz
fcm
60
2
A
B
❇4,5,6,7Response frequency
❇4,6,7Peaking level
fcs
1
-
Vpk2
fnm
-
-
-
3
dB
A
A
Hign gain, 50 Ω end
BW=30kHz, f=28.8MHz
Main amp, Hign gain
Main amp, Low gain
Sub amp, Hign gain
Sub amp, Low gain
❇7
Noise level
-74
-68
dBm
mV/ µW
mV/ µW
mV/ µW
mV/ µW
Sensitivity 1
Sensitivity 2
Sensitivity 3
Sensitivity 4
Rm1
Rm2
Rm3
Rm4
18
0.72
72
24
0.96
96
30
1.2
120
4.8
A
A
B
B
2.88
3.84
Output voltage 500mV → 5mV
f=6.9
MHz
Settling time
tset
-
30
-
-
-
ns
V
A
Low gain, fall time
Maximum output voltage
Common to high/ low gain, Vref reference
Vomax
1
A, B
❇3
Appricable divisions correspond to output terminals.
A : VA, VB, VC, VD
B : VE+G, VF+H
❇4
❇5
❇6
❇7
Light source is a laser diode of λ=780nm.
-3dB level (0dB level is taken for output level when f=0.1MHz)
10µW of DC light is applied to the center of each photodiode, and 4µW of AC light is irradiated. BW=10kHz
5kΩ of resistor and 10pF of capacitor should be connected in parallel between output terminal and Vref terminal.
* These parameters are not guaranteed performance, but general specifications of each optical element which makes up a hologram laser.
• Please refer to the chapter "Handling Precautions"
Notice
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP
devices shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device specification sheets before using any SHARP device.
110
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