Koheras ADJUSTIK – single-frequency fiber 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.

Models and options

T20 HP thulium fiber laser

Standard wavelength 1762.17 nm

Output power 0.5 W

X15 ultra low noise erbium fiber laser

Wavelength range 1535 – 1580 nm

Output power 30 mW

X15 HP ultra low noise erbium fiber laser

Wavelength range 1545 – 1565 nm

Output power 2 W

E15 erbium fiber laser

Wavelength range 1535 – 1580 nm

Output power 40 mW

E15 HP erbium fiber laser

Wavelength range 1545 – 1565 nm

Output power 2 W

Y10 ytterbium fiber laser

Wavelength range 1030 – 1120 nm

Output power > 10 mW

Y10 HP ytterbium fiber laser

Wavelength range 1060 – 1075 nm

Output power 0.2 W

Want to know more?

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

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Selected application areas

Barium ion control

Photon Doppler Velocimetry, PDV

Distributed acoustic sensing – DAS

Cases from users of Koheras

Cases

Danish photonic quantum computer

Over the next four years, a new innovation consortium will create a photonic quantum computer. The consortium will develo …

Cases

Quantum noise squeezing with Koheras lasers

The Nonlinear Quantum Optics group at the University of Hamburg has been working with Koheras BOOSTIK lasers to make sque …

Cases

Coherent free-space transmission through the atmosphere

The University of Western Australia (UWA) has developed an active stabilization system that can perform coherent free-spa …

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:

Y10

Y10 HP

E15

E15 HP

X15

X15 HP

T20 HP

Laser emission, inherently single frequency

CW

CW

CW

CW

CW

CW

CW

Operating wavelength [nm]

1030-1120

1060-1075

1535-1580

1545-1565

1535-1580

1545-1565

1762.17

Output power [mW]

> 10

200

40

200 / 2000

30

200 / 2000

500

Output power tunability [%]

–

25-100

30-100

25 / 10-100

30-100

25 / 10-100

10-100

Linewidth ¹⁾ [kHz]

< 20

< 20

< 0.1

< 0.1

< 0.1

< 0.1

< 10

Max phase noise @1 Hz [dB((Rad/√Hz)/m)]

–

–

–

–

-105

-105

–

Max phase noise @10 Hz [dB((Rad/√Hz)/m)]

–

–

-90

-90

-125

-125

-80

Max phase noise @100 Hz [dB((Rad/√Hz)/m)]

–

–

-110

-110

-130

-130

-100

Max phase noise @1 kHz [dB((Rad/√Hz)/m)]

–

–

–

–

-128

-128 )

–

Max phase noise @20 kHz [dB((Rad/√Hz)/m)]

–

–

-130

-130

–

–

-120

Max phase noise @1 Hz [(µrad/√Hz)/m]

–

–

–

–

5.6

5.6

–

Max phase noise @10 Hz [(µrad/√Hz)/m]

–

–

32

32

0.6

0.6

100

Max phase noise @100 Hz [(µrad/√Hz)/m]

–

–

3.2

3.2

0.3

0.3

10

Max phase noise @1 kHz [(µrad/√Hz)/m]

–

–

–

–

0.4

0.4

–

Max phase noise @20 kHz [(µrad/√Hz)/m]

–

–

0.3

0.3

–

–

1

RIN peak [MHz]

≈ 1.5

≈ 1.5

≈ 0.7

≈ 0.7

≈ 0.7

≈ 0.7

≈ 0.7

RIN level @ peak [dBc/Hz]

<-105

<-105

<-100

<-100

<-100

<-100

<-80

RIN level @ 10 MHz [dBc/Hz]

<-140

<-140

<-135

<-135

<-135

<-135

<-120

Optical S/N (50 pm res.) [dB]

> 65 (typ > 70)

> 60

> 50 (typ. > 55)

> 45

> 50 (typ. > 55)

> 45

> 45

Min thermal tuning range ²⁾ [pm]

± 240

± 240

± 350

± 350

± 350

± 350

± 350

Total thermal tuning range [pm]

680

680

1000

1000

1000 

1000

≈900 (TBC)

Fast wavelength modulation range ³⁾ [GHz]

10

10

8

8

0.5

0.5

>6 @ 10Hz modulation frequency

Fast wavelength modulation ³⁾ [kHz]

< 20

< 20

< 20

< 20

< 20

< 20

< 20

PM output – PER [dB]

> 23

> 17

> 23

> 20

> 23

> 20

> 17

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.

Y10

Y10 HP

E15

E15 HP

X15

X15 HP

T20 HP

Operating temperature range ¹⁾ [°C]

+15 to +55

+15 to +55

+15 to +55

+15 to +55

+15 to +55

+15 to +55

+15 to +55

Storage temperature [°C]

-20 to +60

-20 to +60

-20 to +60

-20 to +60

-20 to +60

-20 to +60

-20 to +60

Humidity non-condensing [%RH]

0 – 70

0 – 70

0 – 70

0 – 70

0 – 70

0 – 70

0 – 70

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) [mm]

483 x 50.1 x 382.1 (19” 1U)

483 x 50.1 x 382.1 (19” 1U)

483 x 50.1 x 382.1 (19” 1U)

483 x 50.1 x 382.1 (19” 1U)

483 x 50.1 x 382.1 (19” 1U)

483 x 50.1 x 382.1 (19” 1U)

483 x 50.1 x 382.1 (19” 1U)

Weight [kg]

6

6

6

6

6

6

6

1) Module temperature.

Y10

Y10 HP

E15

E15 HP

X15

X15 HP

T20 HP

Power supply requirements [VAC, Hz]

100-240, 50-60

100-240, 50-60

100-240, 50-60

100-240, 50-60

100-240, 50-60

100-240, 50-60

100-240, 50-60

Digital interface

USB 2.0, Eth. 10/100

USB 2.0, Eth. 10/100

USB 2.0, Eth. 10/100

USB 2.0, Eth. 10/100

USB 2.0, Eth. 10/100

USB 2.0, Eth. 10/100

USB 2.0, Eth. 10/100

Amplitude and frequency modulation [V]

DB9 (male), differential 2×5

DB9 (male), differential 2×5

DB9 (male), differential 2×5

DB9 (male), differential 2×5

DB9 (male), differential 2×5

DB9 (male), differential 2×5

DB9 (male), differential 2×5

Fiber output type

FC/APC

FC/APC

FC/APC

FC/APC

FC/APC

FC/APC

FC/APC

Fiber pigtail length [m]

App. 1

App. 1

App. 1

App. 1

App. 1

App. 1

App. 1

Related products

Koheras BOOSTIK HP

Benchtop single-frequency high power lasers

Koheras BOOSTIK

Single-frequency fiber amplifier line card