Development of solid-state disk laser for high-average power

Vetrovec, John; Koumvakalis, Andrea; Shah, Raj; Endo, Tom

doi:10.1117/12.478955

Cited by 9 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diode power is injected into the perimetral edge and channeled into the lasing (central) portion of the disk where it is gradually absorbed. Superposition of diode beamlets is balanced by absorption in the disk to provide uniform gain over the entire lasing volume [11,12]. The edge-pumped disk laser was test-verified in a DARPA-funded project, which showed that 96% pump uniformity is achievable under realistic conditions [13].…”

Section: Edge-pumped Composite Diskmentioning

confidence: 99%

Erbium-based gas-cooled disk laser

Vetrovec

2008

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

We report on a novel resonantly-pumped, erbium (Er)-based, gas-cooled disk laser (GCDL) scalable to highaverage power (HAP). The GCDL uses edge-pumped composite laser disks known for their near perfect pump uniformity and compact configuration. Edge pumping enables a long path for pump absorption, which permits using low Er concentration and limits upconversion losses. Resonant operation reduces the waste heat load and enables the use of gas rather than liquid for disk cooling. These attributes make it possible to engineer a lightweight and compact laser device operating at eye-safer wavelengths. This paper presents a GCDL concept design and evaluates its performance for several host materials and operating conditions.

show abstract

Section: Edge-pumped Composite Diskmentioning

confidence: 99%

Erbium-based gas-cooled disk laser

Vetrovec

2008

SPIE Proceedings

Self Cite

View full text Add to dashboard Cite

show abstract

“…The EPDL uses a composite disk having undoped material attached to the peripheral edges of a doped laser disk [6,[22][23][24][25]. This construction improves coupling between the pump diodes and the gain medium, aids in concentration of the pump radiation, and provides cooling to the doped disk edge.…”

Section: Multipassed Edge-pumped Disk Laser Amplifiermentioning

confidence: 99%

Wide-bandwidth ceramic Tm:Lu₂O₃amplifier

et al. 2016

Self Cite

View full text Add to dashboard Cite

We report on the investigation of a novel ceramic Tm:Lu 2 O 3 amplifier lasing at around 2-µm and offering efficient generation of high-energy pulses with high-peak power at high repletion rate, high efficiency, and with near-diffraction-limited beam quality (BQ). The amplifier has a bandwidth of over 300 nm, which offers broad tunability. The bandwidth also supports generation of ultrashort pulses in the femtosecond regime. The "2-for-1" pump architecture of the Tm ion enables high optical-to-optical efficiency while pumping at around 800 nm. High thermal conductivity of the Lu 2 O 3 host supports operation at high-average power. The ceramic nature of the Lu 2 O 3 host overcomes the scalability limits of single crystal sesquioxides.

show abstract

“…The heat exchanger uses open channels to allow direct wetting of the back surface of the disk by the coolant. The width of the open micro-channels was chosen to avoid excessive optical path difference due to local perturbation to isothermal surface [7]. Under nominal thermal load the back surface of the disk was predicted to be very isothermal with less than 1.3ºC temperature peak-to-peak variations.…”

Section: Heat Exchanger Design and Fabricationmentioning

confidence: 99%

“…The density profile of absorbed pump power in the edge-pumped disk was predicted by an analytic model outlined in our previous work [7]. Predicted profiles are evaluated in a statistical sense.…”

Section: Development Of Edge-pumped Architecturementioning

confidence: 99%

“…The central active portion of the disk (typically 2.5 mm in-thickness and 5 to 15 cm in-diameter) is doped with Nd or Yb ions. In our earlier work we have shown that the composite construction improves coupling between the pump diodes and the gain medium, aids concentration of pump radiation, provides cooling to the doped disk edge, and helps to suppress parasitic oscillations by absorbing or trapping amplified spontaneous emission (ASE) [7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Progress in the development of solid state disk laser

et al. 2004

Self Cite

View full text Add to dashboard Cite

This work describes recent progress in the development of a solid-state disk laser that uses composite laser disks in active mirror configuration, edge-pumping, and cooling by microchannel-type heat exchanger. An innovative pressure clamping technique was used to mitigate thermo-mechanical distortions in the disk. A test article Yb:glass disk was operated at a thermal load corresponding to about 1 kW laser output in a steady-state regime with surface temperatures around 90ºC while exhibiting less than Laser /10 rms phase error. Measured pump uniformity approaching 90% validated the edge-pumping architecture.

show abstract

Development of solid-state disk laser for high-average power

Cited by 9 publications

References 6 publications

Erbium-based gas-cooled disk laser

Erbium-based gas-cooled disk laser

Wide-bandwidth ceramic Tm:Lu₂O₃amplifier

Progress in the development of solid state disk laser

Contact Info

Product

Resources

About

Development of solid-state disk laser for high-average power

Cited by 9 publications

References 6 publications

Erbium-based gas-cooled disk laser

Erbium-based gas-cooled disk laser

Wide-bandwidth ceramic Tm:Lu2O3amplifier

Progress in the development of solid state disk laser

Contact Info

Product

Resources

About

Wide-bandwidth ceramic Tm:Lu₂O₃amplifier