1064nm Externally Modulated Nanosecond Long Pulse Laser Source

Connet 1064nm externally modulated nanosecond (ns) long pulse laser source produces the optical pulses from tens of ns to us level through an external modulator such as an acousto-optic modulator (AOM). This laser source is generally used for longer nanosecond (ns) pulse, such as hundreds of ns. The seed laser can be a semiconductor laser or a fiber laser. The way to generate the pulse via the external modulator can maintain the optical spectrum and the frequency spectrum characteristics of the seed laser and the optical pulse quality is excellent. This laser is suitable for the occasion with high demands for pulse, e.g. single frequency narrow linewidth pulsed fiber laser.

Connet has strong technical strength in the field of nanosecond (ns) pulsed fiber lasers and has a deep understanding on the key technologies of pulse generation, shaping, high power amplification and the nonlinear effect suppression such as stimulated Brillouin scattering (SBS), stimulated Raman scattering (SRS) and four-wave mixing (FWM). The operating wavelengths can cover 0.5um, 1.0um, 1.5um and 2.0um.

Features:
• Operating wavelength: 1064nm
• Peak power: up to 50W
• Hundreds of ns, High-quality optical pulse
• AOM modulation, High pulse extinction ratio
• Single frequency, Narrow linewidth

Applications:
• Seed laser for fiber laser
• Optical fiber sensing
• LiDAR
• Coherent communication
• Other scientific research

Main Test Data:

Parameter	Test Result
Input Power (CW)	50mW
Input Spectrum (CW)	See Fig. 2
Output Average Power @500ns/200kHz	>5W
Output Peak Power @500ns/200kHz	>50W
Output Pulse Waveform	See Fig. 3
Operating Temperature Range	0℃~ 30℃
Storage Temperature Range	-40℃~ +85℃
Input Fiber/Connector Type	PM980, FC/APC
Output Fiber/Connector Type	PLMA-GDF-25/250, Bare fiber
Output Spectrum	See Fig. 4

 

Product Information and Main Test Equipment：

Product	1064nm Externally Modulated Nanosecond Long Pulse Laser Source
P/N	VFLP-1064-B-LP-AO
S/N	201710011-2
Main Test Equipment	1064nm Single Frequency PM Seed Laser Source   (S/N: 201410011-1)
	Power Meter (Coherent FieldMaxII-TO)
	Spectrometer (Anritsu MS9710)
	Oscilloscope
	Detector
	AOM (Built-in）

 

Test Environment and Power Supply:

Parameter	Specification
Power Supply	220VAC, 50Hz
Operating Temperature	0-30℃
Test Temperature	25℃
Humidity	<90%
Warm-up Time	30mins

Schematic Diagram of Test:

Fig. 1 Schematic Diagram of Simultaneous Measurement for Power and Spectrum

 

Fig. 2 Measured Input Spectrum

 

   

Fig. 3 Output Pulse Waveform @ 500ns/200kHz

 

Fig. 4 Measured Output Spectrum

Notes:
1. The amplifier has a built-in acousto-optic modulator with the fixed pulse width of 500ns and the fixed repetition frequency at 200kHz. The input light is a continuous light. It is recommended to use the input light of > 30mW. The above tests are done under the input light of 50mW.
2. The output fiber is the bare fiber. The tests should be performed with an oblique octave.
3. Before turning on the amplifier, please confirm that the input light source is normally connected.
4. When turning off the amplifier, please do not shut down the power directly and should slowly reduce the power to the minimum and then turn it off.

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