Koheras ADJUSTIK

Koheras ADJUSTIK – single-frequency lasers

The Koheras ADJUSTIK is a rack-mountable benchtop single-frequency DFB fiber laser. We have based the ADJUSTIK on our renowned BASIK laser modules. Get a low phase noise and a Hz-range linewidth typically only found in costly scientific systems.

Our standard systems are available at 1550.12 nm, 1064.00 nm, and 1762.17 nm. Ask us about other wavelengths in the 1535–1580 nm and 1030–1120 nm ranges.

Key Features

Industry-leading low phase noise

Extremely narrow linewidth

Stable single-frequency operation

Wide wavelength tuning

Easy-to-use benchtop system

Robust and maintenance-free

Models and options

T20 HP
T20 HP
Standard wavelength 1762.17 nm
Options

T20 HP output power: 0.5 W
X15/HP X15
X15/HP X15
Standard wavelength 1550.12 nm
Options
X15 output power: 22.5 mW
X15 HP output power: 0.2 W
E15/HP E15
E15/HP E15
Standard wavelength 1550.12 nm
Options
E15 output power: 40 mW
E15 HP output power: 2 W
Y10/HP Y10
Y10/HP Y10
Standard wavelength 1064.00 nm
Options
Y10 output power: > 10 mW
Y10 HP output power: 0.2 W

Want to know more?

Get in touch with one of our Koheras laser experts and learn more

Ideal for low-noise applications

This range of benchtop laser systems is typically offered as rapidly deployable sources for research laboratories that wish to use it as a tool for scientific work and not spend time on setting up a laser system.

The benchtop models are based on our Koheras BASIK module seed technology and are upgradable in terms of output power. The systems are supplied with our user-friendly CONTROL software for the control and read-out of laser parameters on a PC such as wavelength, output power, and RIN suppression.

The ADJUSTIK lasers are ideal for experimental work for all kinds of low-noise applications e.g. for metrology and coherent sensing where laser noise is critical. The ADJUSTIK HP T20 was designed specifically with the 6S to 5D transition in barium in mind, for quantum applications such as qubit manipulation, quantum sensing, sympathetic cooling, etc.

Want more details?

If you want more details about phase noise, spectral linewidth, frequency stability, or how to wavelength tune your Koheras laser, we have some application notes for you.

Laser phase noise is a frequency-domain view of the noise spectrum around the laser signal. Read more about phase noise in single-frequency lasers.

Spectral linewidth is a measure of the spectral content of the laser light. Read more about linewidth measurement methods.

The laser’s frequency stability is often described in terms of its spectral linewidth. However, this term lacks detail about the laser frequency noise which is often critical in laser applications. Read the analysis of the laser frequency stability using beat-note measurement.

The wavelength of the laser is controlled by the temperature and strain of the DFB cavity. Learn how to tune your Koheras laser.

Specifications

Choose model:
T20 HP
X15
X15 HP
E15
E15 HP
Y10
Y10 HP
Laser emission, inherently single frequency
CW
CW
CW
CW
CW
CW
CW
Output power
0.5 W
22.5 mW
2.0 / 0.2 W
40 mW
2.0 / 0.2 W
> 10 mW
0.2 W
Operating wavelength
1762.17 nm
1535-1580 nm
1545-1565 nm
1535-1580 nm
1545-1565 nm
1030-1120 nm
1060-1075 nm
Output power tunability
10-100%
1-100%
10-100%
30-100%
10-100%
10-100%
Linewidth 1)
< 10 kHz
< 0.1 kHz
< 0.1 kHz
< 0.1 kHz
< 0.1 kHz
< 20 kHz
< 20 kHz
Max phase noise @1 Hz (typical)
-105 dB((Rad/√Hz)/m)
-105 dB((Rad/√Hz)/m)
Max phase noise @10 Hz
-125 dB((Rad/√Hz)/m)
-125 dB((Rad/√Hz)/m)
-90 dB((Rad/√Hz)/m)
-90 dB((Rad/√Hz)/m)
Max phase noise @100 Hz
-130 dB((Rad/√Hz)/m)
-130 dB((Rad/√Hz)/m)
-110 dB((Rad/√Hz)/m)
-110 dB((Rad/√Hz)/m)
Max phase noise @1 kHz
-128 dB((Rad/√Hz)/m)
-128 dB((Rad/√Hz)/m)
Max phase noise @20 kHz
-130 dB((Rad/√Hz)/m)
-130 dB((Rad/√Hz)/m)
Max phase noise @1 Hz (typical)
5.6 (µrad/√Hz)/m
5.6 (µrad/√Hz)/m
Max phase noise @10 Hz
0.6 (µrad/√Hz)/m
0.6 (µrad/√Hz)/m
32 (µrad/√Hz)/m
32 (µrad/√Hz)/m
Max phase noise @100 Hz
0.3 (µrad/√Hz)/m
0.3 (µrad/√Hz)/m
3.2 (µrad/√Hz)/m
3.2 (µrad/√Hz)/m
Max phase noise @1 kHz
0.4 (µrad/√Hz)/m
0.4 (µrad/√Hz)/m
Max phase noise @20 kHz
0.3 (µrad/√Hz)/m
0.3 (µrad/√Hz)/m
RIN peak
≈ 0.7 MHz
≈ 0.7 MHz
≈ 0.7
≈ 0.7 MHz
≈ 0.7 MHz
≈ 1.5 MHz
≈ 1.5 MHz
RIN level @ peak
<-80 dBc/Hz
<-100 dBc/Hz
<-100 dBc/Hz
<-100 dBc/Hz
<-100 dBc/Hz
<-105 dBc/Hz
<-105 dBc/Hz
RIN level @ 10 MHz
<-120 dBc/Hz
<-135 dBc/Hz
<-135 dBc/Hz
<-135 dBc/Hz
<-135 dBc/Hz
<-140 dBc/Hz
<-140 dBc/Hz
Optical S/N (50 pm res.)
> 45 dB
> 50 dB (typ. > 55 dB)
> 45 dB
> 50 dB (typ. > 55 dB)
> 45 dB
> 65 dB (typ > 70 dB)
> 60 dB
Min thermal tuning range 2)
± 350 pm
± 350 pm
± 350 pm
± 350 pm
± 350 pm
± 240 pm
± 240 pm
Total thermal tuning range
1000 pm
1000 pm
1000 pm
1000 pm
1000 pm
680 pm
680 pm
Fast wavelength modulation range 3)
6 GHz
0.5 GHz
0.5 GHz
8 GHz
8 GHz
10 GHz
10 GHz
Fast wavelength modulation 3)
< 20 kHz
< 20 kHz
< 20 kHz
< 20 kHz
< 20 kHz
< 20 kHz
< 20 kHz
PM output – PER
> 17 dB
> 23 dB
> 20 dB
> 23 dB
> 20 dB
> 23 dB
> 17 dB

1) Lorentzian.
2) Relative to the center wavelength at room temperature. If the laser case temperature is outside the interval of approx. 10-50°C, the range of detuning from the center wavelength may be reduced.
3) Modulation depth and frequency are typically slew-rate limited, depending on the power.

Chart by Visualizer
T20 HP
X15
X15 HP
E15
E15 HP
Y10
Y10 HP
Operating temperature range 1)
+15 to +55°C
+15 to +55°C
+15 to +55°C
+15 to +55°C
+15 to +55°C
+15 to +55°C
+15 to +55°C
Storage temperature
-20 to +60°C
-20 to +60°C
-20 to +60°C
-20 to +60°C
-20 to +60°C
-20 to +60°C
-20 to +60°C
Humidity non-condensing
0 – 70 %RH
0 – 70 %RH
0 – 70 %RH
0 – 70 %RH
0 – 70 %RH
0 – 70 %RH
0 – 70 %RH
Monitor output
FC/APC bulkhead
FC/APC bulkhead
FC/APC bulkhead
FC/APC bulkhead
FC/APC bulkhead
FC/APC bulkhead
FC/APC bulkhead
Dimensions (WxHxL)
483 x 50.1 x 382.1 mm (19” 1U)
483 x 50.1 x 382.1 mm (19” 1U)
483 x 50.1 x 382.1 mm (19” 1U)
483 x 50.1 x 382.1 mm (19” 1U)
483 x 50.1 x 382.1 mm (19” 1U)
483 x 50.1 x 382.1 mm (19” 1U)
483 x 50.1 x 382.1 mm (19” 1U)
Weight
6 kg
6 kg
6 kg
6 kg
6 kg
6 kg
6 kg

1) Module temperature.

T20 HP
X15
X15 HP
E15
E15 HP
Y10
Y10 HP
Power supply requirements [VAC]
100-240, 50-60 Hz
100-240, 50-60 Hz
100-240, 50-60 Hz
100-240, 50-60 Hz
100-240, 50-60 Hz
100-240, 50-60 Hz
100-240, 50-60 Hz
Digital interface
USB 2.0, Ethernet 10/100
USB 2.0, Ethernet 10/100
USB 2.0, Ethernet 10/100
USB 2.0, Ethernet 10/100
USB 2.0, Ethernet 10/100
USB 2.0, Ethernet 10/100
USB 2.0, Ethernet 10/100
Amplitude and frequency modulation
DB9 (male), differential 2×5 V
DB9 (male), differential 2×5 V
DB9 (male), differential 2×5 V
DB9 (male), differential 2×5 V
DB9 (male), differential 2×5 V
DB9 (male), differential 2×5 V
DB9 (male), differential 2×5 V
Fiber output type
FC/APC
FC/APC
FC/APC
FC/APC
FC/APC
FC/APC
FC/APC
Fiber pigtail length
App. 1 m
App. 1 m
App. 1 m
App. 1 m
App. 1 m
App. 1 m
App. 1 m