Sanyo Electric develops new blue-violet laser for dual-layer Blue-ray discs
Sanyo Electric announced the development of semiconductor blue-violet laser with improved radiation power for Blue-ray recorders. The power input of new 405nm laser reaches 100mW in impulse making it suitable for new dual-layer disc recording. Power input of similar previous-generation lasers hasn’t exceeded 50mW.
As you know, the current single-layer Blue-ray discs have 27Gb capacity, new lasers doubling this volume. The novelty utilize gallium nitride (GaN) composite material. Such a high radiation power was achieved due to a special current stabilizer along with high-quality optics. Laser main specs:
- Continuous optical power: 50mW
- Pulse optical power: 100mW
- Threshold current: 40mA
- Nominal current (at 50mW optical power): 100mA
- Wavelength: 405nm
- Beam angle: 8° horizontal / 23° vertical
Sampling will start in July, volume being scheduled to early October 2003.
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