OEM 780 nm and 1560 nm Femtosecond Fiber Lasers

Menlo Systems' figure 9^® Technology
Highly Stable, Easy to Use, Ideal for OEM Integration
No Control Unit Required
780 nm or 1560 nm Output

ELMO-HIGH-POWER

ELMO-780-HIGH-POWER

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PM DCF Patch Cables

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Overview
Specs
Pulse Calculations
Feedback

Illustration of ELMO-HIGH-POWER Generating THz Pulses with 1560 nm fs Pulses

Applications

Amplifier Seeding
THz Generation and THz Physics
Ultrafast Spectroscopy
Multi-Photon Excitation
2-Photon Polymerization and 3D Printing

Femtosecond Fiber Laser Optimized for 3D Printing on Nanoscale

Features

High Stability
Low Amplitude and Phase Noise
All-PM Fiber Solution
Single Mode-Lock State
Menlo Systems' figure 9^® Technology
Laser Output in Less than 60 Seconds
Repetition Rate: 50 - 100 MHz
Small Footprint, No External Control Unit Required

Menlo Systems’ fiber-based femtosecond laser sources integrate the latest achievements in fiber technology into easy-to-use products. Menlo Systems’ unique figure 9^® mode locking technology results in reproducible and long-term stable operation. Both systems are maintenance free and engineered for 24/7 operation.

The ELMO-HIGH-POWER, with its all-fiber design, guarantees excellent stability and low-noise operation. This modular unit can be upgraded to a multicolor and/or multichannel system. The fiber-coupled output includes a PM fiber patch cable up to 30 m long, making the system suitable for THz pulse generation and detection. As a seed source for fiber amplifiers, the oscillator is maintenance free, user installed, and ready to use at the press of a single button.

The ELMO-780-HIGH-POWER, with its modular concept and its compact frequency doubling module, is optimized for OEM integration and maximum versatility. It includes a second-harmonic generation (SHG) unit, which can be detached and handheld to minimize heat dissipation into the optical setup. Dispersion compensation is available upon request to accommodate microscope objectives and additional optical components.

Optional Packages

VARIO User-Defined Repetition Rate
Factory-Set Value Selectable in the 50 - 100 MHz Range
MULTIBRANCH Additional Seed Ports
Seeding of Multiple Amplifiers with Optional Subsequent Frequency Conversion to Cover Multiple Wavelengths

Jason Reeves Menlo Systems	Feedback? Questions? Need a Quote? Please note that these femtosecond fiber lasers are available directly from Menlo Systems.
	United States Phone: +1-973-300-4490 Email: ussales@menlosystems.com	Outside United States Phone: +49-89-189166-0 Email: sales@menlosystems.com

Item #	ELMO-780-HIGH-POWER	ELMO-HIGH-POWER
Center Wavelength	780 nm ± 10 nm	1560 nm ± 30 nm
Average Output Power^a	>140 mW	>180 mW
Pulse Width^a	<100 fs	<60 fs (45 fs Typ.)
Output Port	Free Space	Fiber-Coupled
Polarization	Linear, P-Polarized^b	Linear, PM Fiber
Dispersion Management^a	Pigtailed SHG Module with up to 0.5 m Optical Fiber Supply	Dispersion can be factory set to achieve short pulses after 0.5 - 30 m of external fiber
Repetition Rate^a	100 MHz (50 - 100 MHz with VARIO)
2^nd Fiber-Coupled Seed Port	Yes
2^nd High-Power Output Port	Available with MULTIBRANCH
Operating Voltage	12 VDC / 2 A^c
Power Consumption	20 VA
Operating Temperature	15 to 35 °C
Warm-Up Time	<60 s
Laser Head Dimensions / Weight	195 mm x 95 mm x 75 mm / 2.9 kg (7.7" x 3.7" x 3.0" / 6.4 lbs)	195 mm x 95 mm x 75 mm / 2.5 kg (7.7" x 3.7" x 3.0" / 5.5 lbs)
SHG Module Dimensions	182 mm x 95 mm x 32 mm / 1.0 kg (7.2" x 3.7" x 1.3" / 2.2 lbs)	-

The handheld SHG module can also be mounted for s-polarization.
Please inquire with Menlo Systems for your specific combinations of average power, pulse duration, repetition rate, and external fiber length.
External Power Supply for 110/115/230 VAC Included

Pulsed Laser Emission: Power and Energy Calculations

Click above to download the full report.

Determining whether emission from a pulsed laser is compatible with a device or application can require referencing parameters that are not supplied by the laser's manufacturer. When this is the case, the necessary parameters can typically be calculated from the available information. Calculating peak pulse power, average power, pulse energy, and related parameters can be necessary to achieve desired outcomes including:

Protecting biological samples from harm.
Measuring the pulsed laser emission without damaging photodetectors and other sensors.
Exciting fluorescence and non-linear effects in materials.

Pulsed laser radiation parameters are illustrated in Figure 1 and described in the table. For quick reference, a list of equations is provided below. The document available for download provides this information, as well as an introduction to pulsed laser emission, an overview of relationships among the different parameters, and guidance for applying the calculations.

Equations:
Period and repetition rate are reciprocal:		and
Pulse energy calculated from average power:
Average power calculated from pulse energy:
Peak pulse power estimated from pulse energy:
Peak power and average power calculated from each other:
	and
Peak power calculated from average power and duty cycle*:
	*Duty cycle () is the fraction of time during which there is laser pulse emission.

Click to Enlarge

Figure 1: Parameters used to describe pulsed laser emission are indicated in the plot (above) and described in the table (below). Pulse energy (E) is the shaded area under the pulse curve. Pulse energy is, equivalently, the area of the diagonally hashed region.

Parameter	Symbol	Units
Pulse Energy	E	Joules [J]	A measure of one pulse's total emission, which is the only light emitted by the laser over the entire period. The pulse energy equals the shaded area, which is equivalent to the area covered by diagonal hash marks.
Period	Δt	Seconds [s]	The amount of time between the start of one pulse and the start of the next.
Average Power	P_avg	Watts [W]	The height on the optical power axis, if the energy emitted by the pulse were uniformly spread over the entire period.
Instantaneous Power	P	Watts [W]	The optical power at a single, specific point in time.
Peak Power	P_peak	Watts [W]	The maximum instantaneous optical power output by the laser.
Pulse Width		Seconds [s]	A measure of the time between the beginning and end of the pulse, typically based on the full width half maximum (FWHM) of the pulse shape. Also called pulse duration.
Repetition Rate	f_rep	Hertz [Hz]	The frequency with which pulses are emitted. Equal to the reciprocal of the period.

Example Calculation:

Is it safe to use a detector with a specified maximum peak optical input power of 75 mW to measure the following pulsed laser emission?

Average Power: 1 mW
Repetition Rate: 85 MHz
Pulse Width: 10 fs

The energy per pulse:

seems low, but the peak pulse power is:

It is not safe to use the detector to measure this pulsed laser emission, since the peak power of the pulses is >5 orders of magnitude higher than the detector's maximum peak optical input power.

Posted Comments:

Hidetoshi Nakanishi (posted 2019-06-19 15:07:57.51)

(株）SCREENホールディングスの中西英俊です。価格などの情報も提供いただけると助かります。800nm程度の安価で高出力なfsレーザーを探しています。

YLohia (posted 2019-06-19 08:33:09.0)

Hello, thank you for contacting Thorlabs. Our Technical Support team from Japan will reach out to you directly.