A super-high brightness and excellent colour quality laser-driven white light source enables miniaturized endoscopy

Li, Shuxing; Huang, Linhui; Guo, Yuqin; Wang, Le; Xie, Rong‐Jun

doi:10.1039/d3mh01170d

Cited by 16 publications

(1 citation statement)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[19][20][21][22][23][24][25][26] Optical saturation is an intrinsic property of a specific material system that is difficult to optimize, and its mechanism is not yet clear. However, there has been significant progress in the study of thermal saturation optimize, [26][27][28][29][30][31][32][33][34][35][36][37] including compounding high thermal conductivity materials (such as SiO 2 and Al 2 O 3 ) to provide heat dissipation channels, [28][29][30][31][32][33][34] and decreasing the phosphors' temperature through high thermally conductive substrates [35][36][37] or thermoelectric coolers (TEC). [38] Al 2 O 3 is widely used as a composite material with YAG:Ce due to its high thermal conductivity and excellent chemical compatibility with YAG:Ce.…”

Section: Introductionmentioning

confidence: 99%

Luminescence‐Refrigeration Module: Addressing Luminescence Saturation Challenges in Laser‐Driven Lighting

Sun,

Hu,

Liu

et al. 2023

Laser & Photonics Reviews

Self Cite

View full text Add to dashboard Cite

Abstract(Phosphor‐converted white laser diode (PC‐WLD) lighting shows promise for high‐luminance solid‐state illumination. However, luminescence saturation, stemming from optical and thermal factors and, hampers high‐power LD lighting progress. This study delves into the light‐thermal dynamics between lasers and Y3Al5O12:Ce3+ （YAG:Ce）transparent ceramic phosphors (TCPs). Over 48.9% of absorbed laser power generates heat, inducing luminescence saturation. To effectively handle heat dissipation, we introduce a Luminescence‐Refrigeration Module (LRM) comprising the YAG:0.005Ce3+ TCP and a thermoelectric cooler (TEC). The LRM raises laser power density saturation by 4.5 times, meeting high‐power laser lighting requirements. The designed LRM emerges as a groundbreaking strategy for advancing high‐power LD lighting devices.)

show abstract

Section: Introductionmentioning

confidence: 99%

Luminescence‐Refrigeration Module: Addressing Luminescence Saturation Challenges in Laser‐Driven Lighting

Sun,

Hu,

Liu

et al. 2023

Laser & Photonics Reviews

Self Cite

View full text Add to dashboard Cite

show abstract

CaLu₂Mg₂Si₃O₁₂:Ce³⁺, Cr³⁺, Nd³⁺ Phosphor‐In‐Glass Film for Laser‐Driven Ultra‐Broadband Near‐Infrared Lighting with Watt‐Level Output

Lin,

Wang

et al. 2024

Laser & Photonics Reviews

View full text Add to dashboard Cite

Laser diode (LD)‐pumped phosphor‐converted near‐infrared (NIR) lighting source predicts a “brighter” future for active imaging and non‐destructive detection, with improved imaging resolution and detection accuracy to expand more application scenarios. To meet a variety of requirements for LD‐pumped phosphor color converters, herein, a novel CaLu2Mg2Si3O12:Ce3+, Cr3+, Nd3+ (CLMS:Ce3+, Cr3+, Nd3+) phosphor‐in‐glass film (PiGF) sintered on sapphire substrate (SP) composite is fabricated. By introducing a rapid infrared firing technique, the good luminescence properties of phosphor powders are maintained in the PiGF due to the trivial thermally‐aggressive effect of glass components on phosphor particles. The multiple energy transfers (ETs) among Ce3+, Cr3+, and Nd3+ enhance the NIR luminescence of Cr3+ and Nd3+, and simultaneously extend the spectral range to cover the NIR‐I and NIR‐II regions. The luminescent behaviors of samples are carefully examined under different laser excitation modes to gain more insights into laser‐matter interaction. A watt‐level output is achieved by applying appropriate thermal and optical management. A comparative study is performed on the luminescence saturation mechanism of CLMS:Ce3+, Cr3+, Nd3+ PiGF showing different contributions of thermal quenching and intensity quenching among these three ions. Finally, the application presentations confirm the great potential in the fields of long‐distance night vision and high‐resolution biological imaging.

show abstract

Study on Thermal and Luminescence Properties of YAG:Ce Ceramics Excited by High‐Power Fiber Laser with the Condition of a Water‐Cooling Package

Wang,

Li,

et al. 2024

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

A high‐power white laser source is prepared by using a 455 nm blue laser to excite YAG:Ce ceramics. To achieve high‐power output, a water‐cooling device is used to reduce the operating temperature of ceramics. The luminescence properties of laser‐excited phosphor ceramics are studied under different blue excitation power and different irradiation time. The experimental results show that the luminous flux of phosphor ceramics excited by the blue laser increases linearly with the increase of blue laser power, depending on the heat dissipation of the water‐cooling device. When the blue laser power increases to 73.1 W, the phosphor ceramics do not reach the luminescence saturation state. The luminous flux of phosphor ceramics excited by 73.1 W blue laser is stable within 60 min. The maximum luminous flux is 8094 lm, and the maximum working temperature of the ceramics is 110 °C. The experimental results show that water‐cooling packages are an effective means to realize high‐power white laser sources.

show abstract

A super-high brightness and excellent colour quality laser-driven white light source enables miniaturized endoscopy

Abstract: Laser-driven white light source promises intrinsic advantages for miniaturized endoscopic illumination. However, it remains a great challenge to simultaneously achieve high brightness and excellent colour rendition due to the shortage...

Cited by 16 publications

References 29 publications

Luminescence‐Refrigeration Module: Addressing Luminescence Saturation Challenges in Laser‐Driven Lighting

Luminescence‐Refrigeration Module: Addressing Luminescence Saturation Challenges in Laser‐Driven Lighting

CaLu₂Mg₂Si₃O₁₂:Ce³⁺, Cr³⁺, Nd³⁺ Phosphor‐In‐Glass Film for Laser‐Driven Ultra‐Broadband Near‐Infrared Lighting with Watt‐Level Output

Study on Thermal and Luminescence Properties of YAG:Ce Ceramics Excited by High‐Power Fiber Laser with the Condition of a Water‐Cooling Package

Contact Info

Product

Resources

About

A super-high brightness and excellent colour quality laser-driven white light source enables miniaturized endoscopy

Abstract: Laser-driven white light source promises intrinsic advantages for miniaturized endoscopic illumination. However, it remains a great challenge to simultaneously achieve high brightness and excellent colour rendition due to the shortage...

Cited by 16 publications

References 29 publications

Luminescence‐Refrigeration Module: Addressing Luminescence Saturation Challenges in Laser‐Driven Lighting

Luminescence‐Refrigeration Module: Addressing Luminescence Saturation Challenges in Laser‐Driven Lighting

CaLu2Mg2Si3O12:Ce3+, Cr3+, Nd3+ Phosphor‐In‐Glass Film for Laser‐Driven Ultra‐Broadband Near‐Infrared Lighting with Watt‐Level Output

Study on Thermal and Luminescence Properties of YAG:Ce Ceramics Excited by High‐Power Fiber Laser with the Condition of a Water‐Cooling Package

Contact Info

Product

Resources

About

CaLu₂Mg₂Si₃O₁₂:Ce³⁺, Cr³⁺, Nd³⁺ Phosphor‐In‐Glass Film for Laser‐Driven Ultra‐Broadband Near‐Infrared Lighting with Watt‐Level Output