1205/06/50C-NIR
AO Modulators at NIR
Near-IR Performance
With optional anti-reflection coatings Isomet Models 1205/1206C/1250C may be operated at Near-IR wavelengths for frequency-shifting, modulation and scanning applications. The units are supplied with the A/R coating centered at a specific operating wavelength. Static insertion loss at specified wavelength +/- 0.1um is <3%, and at wavelength +/- 0.2um is <5%.
The RF drive power required to achieve maximum diffraction efficiency (Psat) is wavelength related, and increases as l2 . At Near-IR wavelengths the Psat values tend to be high and applying RF power at these levels would, in most cases, result in undesirable thermal effects. The summary listing that follows shows the maximum recommended RF drive power and corresponding diffraction efficiency for each AOM type at typical Near-IR wavelengths.
Recommended Drivers
1205C-1, -2
522C-2 (Digital Modulation)
620C-80 (Variable Frequency + Digital Mod’n)
532C-2 (Analog Modulation)
630C-80 (Variable Frequency + Analog Mod’n)
1206C
523C-2
(Digital Modulation)
620C-100
(Variable Frequency + Digital Mod’n)
533C-2
(Analog Modulation)
630C-100
(Variable Frequency + Analog Mod’n)
1250C
525C-2
(Digital Modulation)
620C-200
(Variable Frequency + Digital Mod’n)
535C-2
(Analog Modulation)
630C-200
(Variable Frequency + Analog Mod’n)
OUTLINE DRAWING
1205C-1 Center Frequency (fc) 80MHz
Tuned RF Bandwidth (MHz):
30
Input Impedance:
50 Ohms (Nominal)
Input Beam Diameter (mm):
> 0.5
Wavelength (mm):
0.83
1.064
1.15
1.30
1.55
Recommended Drive Power (W):
1.00
1.20
1.20
1.20
1.20
% Diffraction Efficiency:
>80
>50
>50
>45
>40
Bragg Angle @ fc (mrad):
9.1
11.7
12.7
14.3
17.1
Beam Separation @ fc (mrad):
18.3
23.5
25.3
28.6
34.2
1205C-2 Center Frequency (fc) 80MHz
Tuned RF Bandwidth (MHz):
30
Input Impedance:
50 Ohms (Nominal)
Input Beam Diameter (mm):
> 1.0
Wavelength (mm):
0.83
1.064
1.15
1.30
1.55
Recommended Drive Power (W):
1.60
1.60
1.60
1.60
1.60
% Diffraction Efficiency:
>75
>45
>40
>30
>20
Bragg Angle @ fc (mrad):
9.1
11.7
12.7
14.3
17.1
Beam Separation @ fc (mrad):
18.3
23.5
25.3
28.6
34.2
1206 Center Frequency (fc) 110MHz
Tuned RF Bandwidth (MHz):
50
Input Impedance:
50 Ohms (Nominal)
Input Beam Diameter (mm):
> 0.5
Wavelength (mm):
0.83
1.064
1.15
1.30
1.55
Recommended Drive Power (W):
1.20
1.20
1.20
1.20
1.20
% Diffraction Efficiency:
>75
>50
>45
>35
>25
Bragg Angle @ fc (mrad):
12.6
16.1
17.4
19.7
23.5
Beam Separation @ fc (mrad):
25.2
32.2
34.8
39.4
47.0
1250C Center Frequency (fc) 200MHz
Tuned RF Bandwidth (MHz):
100
Input Impedance:
50 Ohms (Nominal)
Input Beam Diameter (mm):
> 0.5
Wavelength (mm):
0.83
1.064
1.15
1.30
1.55
Recommended Drive Power (W):
1.20
1.20
1.20
1.20
1.20
% Diffraction Efficiency:
>40
>30
>25
>20
>10
Bragg Angle @ fc (mrad):
22.9
29.3
31.7
35.8
42.7
Beam Separation @ fc (mrad):
45.7
58.6
63.3
71.6
85.4
商品属性 [波长] 0.83/1.064/1.15/1.30/1.55μm [上升/下降时间] 20ns [活跃孔径] 1mm [操作频率] 18MHz [光学材料] PbMo04