Koheras MIKRO

Koheras MIKRO – single-frequency OEM lasers

The Koheras MIKRO is the smallest industrial single-frequency DFB fiber laser on the market. The laser design ensures an inherent and robust single-frequency operation without any mode-hops. And the low phase noise and narrow linewidth make it ideal for OEM integration in industrial sensing systems.

With thousands of lasers installed in industrial sensing systems worldwide, the Koheras MIKRO sets the standard for performance and reliability.

Key Features

Compact OEM footprint

Robust single frequency operation

Low phase noise and narrow linewidth

High wavelength stability

PM and fast frequency tuning option

Models and options

E15
E15
Standard wavelength 1550.12 nm
Output power 40 mW
Options
Polarization-maintaining operation. Thermal wavelength tuning. Fast wavelength tuning.

Want to know more?

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

The standard wavelength is 1550 nm and the MIKRO is available with output wavelength anywhere in the 1535 to 1580 nm range. The laser offers a wide thermal wavelength tuning range and can be combined with fast wavelength modulation e.g. for external stabilization.

The lasers are available with PM (Polarization-Maintaining) or non-PM output.

For easy control, the MIKRO is available with an optional USB interface kit and can be controlled via our user-friendly CONTROL graphical user interface.

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.


Specifications

Choose model:
MIKRO E15
Laser emission
CW – inherently single frequency
Beam quality
M² < 1.05
Linewidth 1)
< 0.1 kHz
Max phase noise @10 Hz
-90 dB((Rad/√Hz)/m)
Max phase noise @100 Hz
-110 dB((Rad/√Hz)/m)
Max phase noise @20 kHz
-130 dB((Rad/√Hz)/m)
Max phase noise @10 Hz
32 (µrad/√Hz)/m
Max phase noise @100 Hz
3.2 (µrad/√Hz)/m
Max phase noise @20 kHz
0.3 (µrad/√Hz)/m
RIN peak
app. 0.7 MHz
RIN level @ peak
<-100 dBc/Hz
RIN level @10 MHz
<-135 dBc/Hz
Optical S/N (50 pm res.)2)
> 50 dB (typ. > 55 dB)
Min thermal wavelength
tuning range3)
± 150 pm
Total thermal tuning range
450 pm
Fast wavelength
modulation range
> 8 GHz
Fast wavelength modulation
< 20 kHz
PM output – PER
> 23 dB

1) 120 µs integration time.

2) >47 dB (typ. > 52 dB) for non-PM version.

3) Relative to center wavelength at room temperature. If the laser is operated in very cold or hot environments, this wavelength range is truncated on either the upper or lower side.

Chart by Visualizer
MIKRO E15
Dimensions (WxHxD)
70 x 20 x 150 mm
Weight
0.35 kg
Operating temperature range 1)
+15 to +60°C
Humidity, non-condensing
0-70 % RH

1) Module temperature.

MIKRO E15
Power supply requirements
12 VDC
Power consumption
Typical 4 W, max 10 W
Communication interface
RS-485
Optical output
FC/APC (0.5 m pigtail)