Efficient double intracavity-contacted vertical-cavity surface-emitting lasers with very low-threshold and low-power dissipation designed for cryogenic applications
Efficient continuous wave operation of oxide-confined double intracavity-contacted InGaAs-GaAs vertical-cavity surface-emitting lasers (VCSEL's) with low-threshold voltage, low-threshold current and low-power dissipation has been achieved over a wide range of cryogenic temperatures (77 K--250 K). Low operating voltages were obtained by routing current through two intracavity contacts to bypass both distributed Bragg reflector (DBR) mirrors, while lower optical losses were achieved by using undoped DBR mirrors with abrupt heterointerfaces. This resulted in low operating voltages (<1.5 V), submillampere threshold currents (I{sub th} {approximately} 0.15 mA), low-power dissipation ({approximately} 0.21 mW at threshold) and a high power conversion efficiency ({eta}{sub eff} = 31%).
- Research Organization:
- Univ. of New Mexico, Albuquerque, NM (US)
- Sponsoring Organization:
- US Department of the Army; US Department of Energy
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 20015642
- Journal Information:
- IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers), Journal Name: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers) Journal Issue: 2 Vol. 12; ISSN 1041-1135; ISSN IPTLEL
- Country of Publication:
- United States
- Language:
- English
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