MegaWatt Lasers
Inc.

Resonators

30 Watt 2.94 m SOLID-STATE RESONATOR

Compact, Room-Temperature Water-Cooled, Flashlamp-Pumped Er:YAG Resonator Assembly
MegaWatt Lasers is pleased to offer off-the-shelf laser resonator assemblies. These resonators are intended for
OEM’s or R&D applications. Resonator assemblies include pump chamber, flashlamp, laser rod, trigger
electronics, and resonator optics tailored for the specific application. This resonator assembly is perfectly suited
as a laboratory laser which can easily transform into an OEM design. Also available are resonator assemblies
using other solid-state laser media, such as CTH:YAG, Er:Glass, Nd:YAG, Nd: Glass, Ruby, and Alexandrite.
MegaWatt Lasers also offers custom resonators with higher average powers 40 W (2.09 m) and 200 W @ (1.06m) as well as turnkey systems. Our Engineering department has considerable experience assisting OEMcustomers with custom as well as complete system designs.

Parameter
Wavelength
Resonator Output
Lamp Voltage
Pulse Width
Coolant Temp
Coolant Flow Rate
Coolant Resistivity
Pressure Drop
Repetition Rate

EnergyPowerPeak Power

Table of Standard Specifications
ValueUnitNotes
2.94µm30
W
10 – 30 Hz
Nominal: 380 – 700
V
Typical range
Nominal: 100 – 500µs
350 µs Typical
Deionized or Distilled H2O,25°C
Free from organic contamination
8 – 10Liters/min 2 Gallons/min
0.2 – 1MΩ∙cm
Coolant Conductivity: 1 – 5 µS/cm
200 – 240kPa
Return pressure should be < 35 kPa
5 – 30Hz
Typical range
Recommended Pump Parameters Limits
Pump energy is manually measured or the flash≤ 100Joules
lamp driver has internal circuitry to measure.
≤ 1300Watts
Pump Energy * Repetition Rate≤ 265
kW
Pump Energy / Pulse Widthwww.megawattlasers.com

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Output Power Vs. Pump Power
Er:YAG 4X100, 350 µs, 82%R OC
405Hz
10Hz
15Hz
20Hz
25Hz30Hz35

Output Power [W]

30
25
20
15
10500200

400

600

800

1000

1200

1400

1600

Pump Power [W]Output Energy Vs. Pump Energy
Er:YAG 4X100, 350 µs, 82%R OC
3.5

5Hz
10Hz
15Hz
20Hz
25Hz30Hz

Output Energy [J]

3.0
2.5
2.0
1.5
1.0
0.5
0.001020

30

4050

60

708090100

Pump Energy [J]www.megawattlasers.com20190111+1 843 342 7221

MegaWatt Lasers
Inc.
Output Energy Vs. Repetition Rate
Er:YAG 4X100, 350 µs, 82%R OC
3.529.6J_480V
42.4J_540V
64.8J_620V
92.8J_700V

3.0

Output Energy [J]

2.5
2.0
1.5
1.0
0.5

0.00246810 12 14 16 18 20 22 24 26 28 30 32

Repetition Rate [Hz]Output Power Vs. Repetition Rate
Er:YAG 4X100, 350 µs, 82%R OC

35

29.6J_480V
42.4J_540V

3064.8J_620V
92.8J_700V

Output Power [W]25201510500246810 12 14 16 18 20 22 24 26 28 30 32 34 36

Repetition Rate [Hz]www.megawattlasers.com

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MegaWatt Lasers
Inc.
Output Energy Vs. Flashlamp Voltage
Er:YAG 4X100, 350 µs, 82%R OC
3.55Hz
10Hz15Hz20Hz
25Hz30Hz

3.0

Output Energy [J]

2.5
2.0
1.5
1.0
0.5

0.0
350

400

450

500

550

600

650

700750Flashlamp Voltage [V]Output Energy Vs. Coolant Temperature
Er:YAG 4X100, 350 µs, 10 Hz, 82%R OC, 8 l/min
2.3

Output Energy [J]

2.2

2.1

2.0

1.9

15202530

35

Coolant Temperature [°C]www.megawattlasers.com

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40

MegaWatt Lasers
Inc.

Divergence Vs. Output Power
Er:YAG 4X100, 350 µs, 10 Hz, 82%R OC

4510Hz15Hz20Hz25Hz30Hz

40

Divergence [mRad]

3530
25
201510500510152025

30

35

Output Power [W]
Recommended Limits
Output Energy Vs. Pulse Width
Er:YAG 4X100, 10 Hz, 82%R OC

4.0

3.5700V 670V 640V 620V700V

Output Energy [J]3.0700V

2.5
2.0700V

1.5700V
1.0700V
0.50.050

100

150200250300350400450500

NOTE: The voltages nextto the data points are thehighest recommended
operating voltage for agiven pulse width. For apulse width setting
between 100 – 350 µs,
the resonator is limited
by peak power andshould not be operated
over 700 V. The
resonator will notachieve 30 W below 350µs. Between 350 -500 µs,
the resonator is limited
by average power. At 400µs, the voltage should
not exceed 670V and soon. Exceeding therecommended limits willcause optical damage tothe resonatorcomponents, which is notcovered by MWL’s
warranty.

550

Pulse Width [µs]www.megawattlasers.com

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Mechanical Interface

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Representatives

United StatesJapan

MegaWatt Lasers, Inc.
P.O. Box 24190
Hilton Head Island, SC
29925-4190+1 843-342-7221 Phone+1 843-342-7223 Fax
sales@megawattlasers.com
http://www.megawattlasers.com

New Metals and Chemicals Corporation, Inc.
Kyobashi TD Building
No. 2-5, 1-chome, Kyobashi
Chuo-ku, Tokyo, Japan
104-0031
81 (3) 3201-8600 Phone
81 (3) 3271-5860 Fax
info@newmetals.co.jp
http://www.newmetals.co.jp

IsraelChina

IL Photonics BSD Ltd.
Moshe Bril, General Manager
511 Hashita
Beit Shemesh 99552, Israel+972-2-9923532 Phone+972-2-9921480 Fax
moshe@ILPhotonics.com
http://www.ILPhotonics.com

林 翔 (Sharon Lin)销售代表, Sales Representative
Fuzhou, China
Tel: +86 136 0081 0883
+86 (591) 8756 1137
WeChat: 1002550988
sharon.lin@megawattlasers.com

EuropeS. Korea

MegaWatt Lasers, Inc.
P.O. Box 24190
Hilton Head Island, SC
29925-4190+1 843-342-7221 Phone+1 843-342-7223 Fax
sales@megawattlasers.com
http://www.megawattlasers.com

L2K (Laser Leader of Korea) Co.
Jae-Pil Jeon
530-ho, 187, Techno-2ro,
Yuseong-gu, Daejeon 305-500 Korea
Phone: +82-42-934-7744+972-2-9921480 Fax
jpjeon@l2k.kr or sales@l2k.kr
http://www.l2k.kr

www.megawattlasers.com

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