Post on 28-Jun-2020
Sacher Lasertechnik
Next Generation Micron Laser
Simon RauchDr. J. Sacher
(confidential technical documentation)
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Littrow Laser Products
Application Optical Cooling & Trapping Raman Spectroscopy Holography
Award Winning Product CLEO Conference 2000
Cavity Layout
Product Photo
(confidential technical documentation)
Next Generation Littrow Cavity
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Littrow Laser Products – Industrial Grade
Compact Package Excellent Stability No Moving Parts No Mechanic Cavity
Resonances Narrow Linewidth Low Temperature
Drift
(confidential technical documentation)
| 4
Littrow Laser Products – Industrial Grade
| 4
High Power Model @ 780nm PI Curve
Efficiency 1mW/mA
Wavelength Tuning
Tuning Factor 1pm / mA
0 100 200 300 400 500 6000
50
100
150
200
250
300
350
400
Pow
er (
mW
)
Injection Current (mA)
(confidential technical documentation)
200 220 240 260 280 300780,020
780,022
780,024
780,026
780,028
780,030
780,032
780,034
780,036
780,038
780,040
Wav
elen
gth
/ nm
Injection Current / mA
| 5
Littrow Laser Products – Industrial Grade
| 5
High Power Model @ 780nm Spectrum
(confidential technical documentation)
760 770 780 790 800
-80
-70
-60
-50
-40
-30
-20
-10re
l. In
tens
ity [d
B]
Wavelength [nm]
52dB
Side mode suppression ratio
| 6
Littrow Laser Products – Industrial Grade
| 6
Rubidium D2 Large Scan
Several Absoption Lines
Narrow Scan
Hyperfine Structure
(confidential technical documentation)
| 7
Littrow Laser Products – Industrial Grade
| 7
Linewidth Beat Experiment
Linewidth << 100kHz< 15kHz (typ.)
(confidential technical documentation)
395 400 405 410
40
60
80
100
120
140
160
180
200
220
Inte
nsity
/ dB
Frequency / MHz
VBG Pilot rauscharm
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Littrow Laser Products – Industrial Grade
Tuning Mechanism (a) Initial Status (b) Laser Current Change
Mode position change
(b) Wavelength Tuning Mode position changes
relative to Grating
(c) Defined Mode-Hop As soon as one mode
leaves the reflectionband of the Grating, an other mode shifts in
200 220 240 260 280 300780,016
780,018
780,020
780,022
780,024
780,026
780,028
780,030
780,032
780,034
780,036
Wav
elen
gth
/ nm
Injection Current / mA
| 9
Littrow Laser Products – Industrial Grade
| 9
Performance Data @ 760nm PI Curve
Efficiency 1mW/mA
Wavelength Tuning
Tuning Factor 0,625pm / mA
(confidential technical documentation)
0 50 100 150 200 2500
20
40
60
80
100
Pow
er (
mW
)
Current (mA)
22°C
120 180 240760,08
760,10
760,12
760,14
Wav
elen
gth
(nm
)
Current (mA)
22°C
| 10
Littrow Laser Products – Industrial Grade
| 10
High Power Model @ 780nm PI Curve
Efficiency 1mW/mA
Wavelength Tuning
Tuning Factor 1pm / mA
0 100 200 300 400 500 6000
50
100
150
200
250
300
350
400
Pow
er (
mW
)
Injection Current (mA)
(confidential technical documentation)
200 220 240 260 280 300780,020
780,022
780,024
780,026
780,028
780,030
780,032
780,034
780,036
780,038
780,040
Wav
elen
gth
/ nm
Injection Current / mA
| 11
Littrow Laser Products – Industrial Grade
| 11
Performance Data @ 785nm PI Curve
Efficiency 1mW/mA
0 20 40 60 80 100 120 140 160 1800
20
40
60
80
100
120
Pow
er (
mW
)
Injection Current (mA)
Wavelength Tuning
Tuning Factor 0,625pm / mA
30 40 50 60 70 80 90 100 110 120785,105
785,110
785,115
785,120
785,125
785,130
785,135
785,140
785,145
Wav
elen
gth
(nm
)
Injection Current (mA)
(confidential technical documentation)
| 12
Littrow Laser Products – Industrial Grade
| 12
Performance Data @ 795nm PI Curve
Efficiency 0.8mW/mA
Wavelength Tuning
Tuning Factor 1pm / mA
(confidential technical documentation)
0 20 40 60 80 100 120 140 160 1800
20
40
60
80
100
Pow
er /
mW
Injection Current / mW
8°C
60 80 100 120 140 160 180
794,965
794,970
794,975
794,980
794,985
794,990
794,995
Wav
elen
gth
(Vac
uum
) / n
m
Injection Current / mA
8°C
| 13
Littrow Laser Products – Industrial Grade
| 13
Performance Data @ 830nm PI Curve
Efficiency 0.8mW/mA
Wavelength Tuning
Tuning Factor 1pm / mA
(confidential technical documentation)
0 20 40 60 80 100 120 140 160 1800
5
10
15
20
25
30
35
40
Pow
er /
mW
Injection Current / mA
50 100 150
829,86
829,88
829,90
Wav
elen
gth
/ nm
Injection Current / mA
| 14
Littrow Laser Products – Industrial Grade
| 14
Performance Data @ 852nm PI Curve
Efficiency 1mW/mA
Wavelength Tuning
Tuning Factor 0.5pm / mA
(confidential technical documentation)
0 20 40 60 80 100 120 140 160 180 2000
20
40
60
80
100
120
140
Pow
er /
mW
Injection Current / mA
11,2°C, mit Kappe + Fenster
60 80 100 120 140 160 180 200
852.10
852.12
852.14
Wav
elen
gth
(Air)
/ nm
Injection Current / mA
11,2°C, mit Kappe + Fenster
| 15
Littrow Laser Products – Industrial Grade
| 15
Performance Data @ 895nm PI Curve
Efficiency 0.6mW/mA
Wavelength Tuning
Tuning Factor 1pm / mA
(confidential technical documentation)
0 10 20 30 40 50 60 70 80 90 100 1100
10
20
30
40
Pow
er /
mW
Injection Current / mA
90 100 110 120 130 140 150 160894,56
894,57
894,58
894,59
894,60
894,61
Wav
elen
gth
(Vac
uum
) / n
m
Injection Current / mA
16°C
| 16
Littrow Laser Products – Industrial Grade
| 16
Calcium Ion Cooling Schematic 375nm Continuum
393nm 397nm
850nm 854nm 866nm
Available upon request
(confidential technical documentation)
| 17
Littrow Laser Products – Industrial Grade
| 17
Strontium Cooling Schematic 460.9nm
689.5nm 7.8kHz 698nm
679.2nm 688nm 707.2nm
Available upon request
(confidential technical documentation)
| 18
Littrow Laser Products – Industrial Grade
Relative Intensity Noise (RIN) Low, nearly constant RIN of
-136 dB/Hz above 1 kHz
No Microphonic CavityResonances
RIN is reduced for higherOperation Current Values
Laser Driver
Diode Laser
Detector
Oszi
Amplifier
| 19
Low Noise Laser Controllers
Micro Controller Operated Laser Controllers
Sub µA Noise Figure Up to 4000mA Laser
Current Integrated Function
Generator Integrated Piezo
Amplifier Fully Remote Control
Features USB, GPIB, RS232 Laboratory and
OEM Versions
(confidential technical documentation)
| 20
Technology: Micro-Controller & FPGA
Low Noise Laser Controllers
Laser Diode Current Sub µA Noise Figure 10 ResistorΩ
DC Current
Electrical Spectrum AnalyzerLaser Controller
102 103 104 105
1E-12
1E-11
1E-10
1E-9
1E-8
Pilot PZ 500 Noise Spectrum
Frequency [Hz]
100mA 200mA 500mA
Cur
rent
Noi
se [A
/ H
z]
(confidential technical documentation)
| 21
Servo Controller
High Frequency PI Regulator 10MHz Bandwidth Adjustable Corner
Frequencies Integration Hold Function Low Frequency Gain Limit FPGA Controlled Operation Fully Remote Control
via USB
Application: Laser Stabilization Optical Cooling & Trapping
Principles of Operation
Product Photo
(confidential technical documentation)
| 22
Modulator & Demodulator
High Frequency Synthesizer Central 3GHz Clock 2 DDS Syntesizer 100kHz to100MHz Modulation ns Phase Adjustment High Frequency Mixer High Modulation Amplitude Fully Remote Control
via USB
Application: Laser Stabilization Pound Drever Hall Lock Optical Cooling & Trapping
Principles of Operation
Product Photo
(confidential technical documentation)
| 23
Application: Optical Cooling & Trapping
Laser Frequency Stabilization Frequency Tolerance <1MHz 24/7 Operation Requirement Locking to Rubidium Transition Locking to Cesium Transion Side of Fringe & Top of Line Lock
Fully Remote Control Operation Internal Operation Control via FPGA Remote Control via USB
ECDLISO PBSλ/2BS
Rb
M
MBS
Wavemeter D1 D2Lockcircuit
(confidential technical documentation)
| 24
Corporate Headquarter
Sacher Lasertechnik Headquarter
Space 1200m²12900 square ft.
30 employees at location
(confidential technical documentation)
| 25
Product Family Overview
Laser Controller Laser Controller Laser Controller
AR Coated Laser Diodes
MOPA Laser System MOPA Laser System
Littrow Laser System Littman Laser System Laser Amplifier System
DFB Laser Diodes
THz Laser System
DFB Laser Diodes
SHG Laser System
ns Pulsed Laser System
ps Mode Locked Laser
| 26
Technology: Thin Film Coating Equipment
Thin Film Coating Equipment
Sputter Coater High Volume
Production R&D Coatings
E-Beam Coater R&D Coatings
(confidential technical documentation)
| 27
Technology: Diode Laser Chip Handling
Dye Bonder Laser Chip Mounting
Wire Bonder Laser Chip Electrical Connection
(confidential technical documentation)
| 28
Technology: Electro Optic Micro-Assembly
Multi-Emitter Fiber Coupling
Up to 12 Single Mode Emitters Fiber Coupled
Multi-Wavelength Emitter Fiber Coupled
(confidential technical documentation)
| 29
Thank You For Your Attention!
Sacher Lasertechnik GmbHRudolf-Breitscheid-Str. 1-535037 MarburgGermany
Sacher Lasertechnik LLC.5765 Equador WayBuena Park, CA 90620United States
http://www.sacher-laser.com© 2009 Sacher Lasertechnik GmbH. All rights reserved.