Laser Gain Modules

CEO’s laser resonator and laser amplifier modules are the engine that drives not only our own DPSS laser systems, but also external customers who fabricate their own DPSS laser systems.

With a variety of gain medium, rod diameter, rod length and diode bar count options, these gain modules have served as a work horse for important applications:

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CEO’s RBAT series of laser modules are available with rod sizes from 2 to 4mm in diameter, both CW and QCW pumped, and standard offerings of YAG and YLF materials. Maximum CW powers of 150W and long pulsed energies of 500mJ are supported. Typical uses are laser single mode oscillators for pulsed MOPA systems, CW pumped, 532nm, ns q-switched lasers, and LIDAR lasers.

CEO’s REA series of laser modules are available with rod sizes from 4 to 32mm in diameter, both CW and QCW pumped, and standard offerings of YAG and YLF materials. Maximum CW powers of 650W and long pulsed energies of 8J are supported. Typical uses are laser amplifiers for nanosecond and picosecond MOPA lasers, gain modules for unstable oscillator resonators, and laser peening.

Laser Gain Modules

Module Type:

Type:

Rod Diameter (mm):

Peak Pump Power (W):

Output Power (W)*:

Stored Energy (J):

wdt_ID	Module Type	Type	Module Part Number	Rod Diameter (mm)	Peak Pump Power (W)	Output Power (W)*	Stored Energy (J)
1	RBAT	CW	RBAT20-0.33C2	2.00	60	10
2	RBAT	CW	RBAT20-0.66C2	2.00	120	20
3	RBAT	CW	RBAT20-1C2	2.00	180	35
4	RBAT	CW	RBAT250-1C2	2.50	180	40
5	RBAT	CW	RBAT30-1C2	3.00	180	50
6	RBAT	CW	RBAT24-1C2	2.00	240	50
7	RBAT	CW	RBAT254-1C2	2.50	240	65
8	RBAT	CW	RBAT34-1C2	3.00	240	75
9	RBAT	CW	RBAT34-1C2-FO1 (YLF)	3.00	240	35
10	RBAT	CW	RBAT35-1C2	3.00	300	100
	Module Type	Type		Rod Diameter (mm)	Peak Pump Power (W)	Output Power (W)*	Stored Energy (J)

*RBAT (CW) Short Cavity Test Configuration – Cavity Length: 165 mm + 5 mm, High Reflector: 0.75mCC, Output Coupler: 80%
*RBAT (QCW) Short Cavity Test Configuration – Cavity Length: 165 mm + 5 mm, High Reflector: 0.75mCC, Output Coupler: 40%
*REA (CW) Short Cavity Test Configuration – Cavity Length: 280 mm + 5 mm, High Reflector: 0.75mCC, Output Coupler: 70%
*REA (QCW) Short Cavity Test Configuration – Cavity Length: 280 mm + 5 mm, High Reflector: 0.75mCC, Output Coupler: 40%

Our Most Popular Product Offerings

REA6308-2PLaser Amplifier Module

REA10008-3P Laser Amplifier Module

REA15008-3P Laser Amplifier Module

REA25412-45PLaser Amplifier Module

HIGH PULSE ENERGY AMPLIFICATION

Large laser amplifier modules enable high pulse energy output.

Nd:YAG and Nd:YLF are excellent laser crystals for high-energy DPSS lasers due to their robustness, availability, and optimal pump and output wavelengths. Each gain medium has its advantages and disadvantages. While Nd:YAG is more robust and homogeneous, and its high stimulated emission cross section results in low stored energy density adequate for high-frequency operation, its poor performance under high thermal load (thermal lensing and thermally induced stress birefringence) limits its achievable maximum average output power.

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ENABLING HIGH AVERAGE POWER

Nd:YLF’s high saturation fluence (low-gain cross-section) allows high laser fluence while minimizing pulse distortion.

It has a relatively weak thermal astigmatism as well. However, its poor transmitted wavefront quality and low thermal fracture limit are disadvantages that must be addressed. In the design of large diameter high energy Nd:YLF amplifiers, CEO employs the use of MRF on the laser crystals in order to minimize transmitted wavefront error (TWE). Large TWE can negatively impact beam quality and subsequent SHG conversion efficiency (as well as efficiencies in Ti:S, OPA, and OPCPA pumping.) MRF enables higher energy pulses, higher repetition rates, and, thus, higher average power. Pairs of modules with increasingly larger A-cut rods are used further downstream to amplify the light, with the crystal axes in each pair arranged orthogonally to minimize thermal birefringence distortions.

Laser Gain Modules

Laser Gain Modules

Our Most Popular Product Offerings

REA6308-2PLaser Amplifier Module

REA10008-3P Laser Amplifier Module

REA15008-3P Laser Amplifier Module

REA25412-45PLaser Amplifier Module

HIGH PULSE ENERGY AMPLIFICATION

ENABLING HIGH AVERAGE POWER

Contact the sales team for the full list of capabilities and specifications

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